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Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/client.c57
-rw-r--r--fs/nfs/delegation.c88
-rw-r--r--fs/nfs/dir.c145
-rw-r--r--fs/nfs/file.c15
-rw-r--r--fs/nfs/fscache.c3
-rw-r--r--fs/nfs/getroot.c191
-rw-r--r--fs/nfs/inode.c58
-rw-r--r--fs/nfs/internal.h4
-rw-r--r--fs/nfs/iostat.h6
-rw-r--r--fs/nfs/namespace.c20
-rw-r--r--fs/nfs/nfs3acl.c23
-rw-r--r--fs/nfs/nfs3proc.c128
-rw-r--r--fs/nfs/nfs3xdr.c2
-rw-r--r--fs/nfs/nfs4_fs.h8
-rw-r--r--fs/nfs/nfs4namespace.c12
-rw-r--r--fs/nfs/nfs4proc.c177
-rw-r--r--fs/nfs/nfs4state.c36
-rw-r--r--fs/nfs/nfs4xdr.c22
-rw-r--r--fs/nfs/nfsroot.c14
-rw-r--r--fs/nfs/pagelist.c14
-rw-r--r--fs/nfs/proc.c144
-rw-r--r--fs/nfs/read.c4
-rw-r--r--fs/nfs/super.c150
-rw-r--r--fs/nfs/unlink.c4
-rw-r--r--fs/nfs/write.c55
25 files changed, 828 insertions, 552 deletions
diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index a8766c4ef2e..7ec9b34a59f 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -934,7 +934,6 @@ static int nfs_probe_fsinfo(struct nfs_server *server, struct nfs_fh *mntfh, str
}
fsinfo.fattr = fattr;
- nfs_fattr_init(fattr);
error = clp->rpc_ops->fsinfo(server, mntfh, &fsinfo);
if (error < 0)
goto out_error;
@@ -966,6 +965,8 @@ out_error:
static void nfs_server_copy_userdata(struct nfs_server *target, struct nfs_server *source)
{
target->flags = source->flags;
+ target->rsize = source->rsize;
+ target->wsize = source->wsize;
target->acregmin = source->acregmin;
target->acregmax = source->acregmax;
target->acdirmin = source->acdirmin;
@@ -1045,13 +1046,18 @@ struct nfs_server *nfs_create_server(const struct nfs_parsed_mount_data *data,
struct nfs_fh *mntfh)
{
struct nfs_server *server;
- struct nfs_fattr fattr;
+ struct nfs_fattr *fattr;
int error;
server = nfs_alloc_server();
if (!server)
return ERR_PTR(-ENOMEM);
+ error = -ENOMEM;
+ fattr = nfs_alloc_fattr();
+ if (fattr == NULL)
+ goto error;
+
/* Get a client representation */
error = nfs_init_server(server, data);
if (error < 0)
@@ -1062,7 +1068,7 @@ struct nfs_server *nfs_create_server(const struct nfs_parsed_mount_data *data,
BUG_ON(!server->nfs_client->rpc_ops->file_inode_ops);
/* Probe the root fh to retrieve its FSID */
- error = nfs_probe_fsinfo(server, mntfh, &fattr);
+ error = nfs_probe_fsinfo(server, mntfh, fattr);
if (error < 0)
goto error;
if (server->nfs_client->rpc_ops->version == 3) {
@@ -1075,14 +1081,14 @@ struct nfs_server *nfs_create_server(const struct nfs_parsed_mount_data *data,
server->namelen = NFS2_MAXNAMLEN;
}
- if (!(fattr.valid & NFS_ATTR_FATTR)) {
- error = server->nfs_client->rpc_ops->getattr(server, mntfh, &fattr);
+ if (!(fattr->valid & NFS_ATTR_FATTR)) {
+ error = server->nfs_client->rpc_ops->getattr(server, mntfh, fattr);
if (error < 0) {
dprintk("nfs_create_server: getattr error = %d\n", -error);
goto error;
}
}
- memcpy(&server->fsid, &fattr.fsid, sizeof(server->fsid));
+ memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid));
dprintk("Server FSID: %llx:%llx\n",
(unsigned long long) server->fsid.major,
@@ -1094,9 +1100,11 @@ struct nfs_server *nfs_create_server(const struct nfs_parsed_mount_data *data,
spin_unlock(&nfs_client_lock);
server->mount_time = jiffies;
+ nfs_free_fattr(fattr);
return server;
error:
+ nfs_free_fattr(fattr);
nfs_free_server(server);
return ERR_PTR(error);
}
@@ -1338,7 +1346,7 @@ error:
struct nfs_server *nfs4_create_server(const struct nfs_parsed_mount_data *data,
struct nfs_fh *mntfh)
{
- struct nfs_fattr fattr;
+ struct nfs_fattr *fattr;
struct nfs_server *server;
int error;
@@ -1348,6 +1356,11 @@ struct nfs_server *nfs4_create_server(const struct nfs_parsed_mount_data *data,
if (!server)
return ERR_PTR(-ENOMEM);
+ error = -ENOMEM;
+ fattr = nfs_alloc_fattr();
+ if (fattr == NULL)
+ goto error;
+
/* set up the general RPC client */
error = nfs4_init_server(server, data);
if (error < 0)
@@ -1362,7 +1375,7 @@ struct nfs_server *nfs4_create_server(const struct nfs_parsed_mount_data *data,
goto error;
/* Probe the root fh to retrieve its FSID */
- error = nfs4_path_walk(server, mntfh, data->nfs_server.export_path);
+ error = nfs4_get_rootfh(server, mntfh);
if (error < 0)
goto error;
@@ -1373,7 +1386,7 @@ struct nfs_server *nfs4_create_server(const struct nfs_parsed_mount_data *data,
nfs4_session_set_rwsize(server);
- error = nfs_probe_fsinfo(server, mntfh, &fattr);
+ error = nfs_probe_fsinfo(server, mntfh, fattr);
if (error < 0)
goto error;
@@ -1387,9 +1400,11 @@ struct nfs_server *nfs4_create_server(const struct nfs_parsed_mount_data *data,
server->mount_time = jiffies;
dprintk("<-- nfs4_create_server() = %p\n", server);
+ nfs_free_fattr(fattr);
return server;
error:
+ nfs_free_fattr(fattr);
nfs_free_server(server);
dprintk("<-- nfs4_create_server() = error %d\n", error);
return ERR_PTR(error);
@@ -1403,7 +1418,7 @@ struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data,
{
struct nfs_client *parent_client;
struct nfs_server *server, *parent_server;
- struct nfs_fattr fattr;
+ struct nfs_fattr *fattr;
int error;
dprintk("--> nfs4_create_referral_server()\n");
@@ -1412,6 +1427,11 @@ struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data,
if (!server)
return ERR_PTR(-ENOMEM);
+ error = -ENOMEM;
+ fattr = nfs_alloc_fattr();
+ if (fattr == NULL)
+ goto error;
+
parent_server = NFS_SB(data->sb);
parent_client = parent_server->nfs_client;
@@ -1441,12 +1461,12 @@ struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data,
BUG_ON(!server->nfs_client->rpc_ops->file_inode_ops);
/* Probe the root fh to retrieve its FSID and filehandle */
- error = nfs4_path_walk(server, mntfh, data->mnt_path);
+ error = nfs4_get_rootfh(server, mntfh);
if (error < 0)
goto error;
/* probe the filesystem info for this server filesystem */
- error = nfs_probe_fsinfo(server, mntfh, &fattr);
+ error = nfs_probe_fsinfo(server, mntfh, fattr);
if (error < 0)
goto error;
@@ -1464,10 +1484,12 @@ struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data,
server->mount_time = jiffies;
+ nfs_free_fattr(fattr);
dprintk("<-- nfs_create_referral_server() = %p\n", server);
return server;
error:
+ nfs_free_fattr(fattr);
nfs_free_server(server);
dprintk("<-- nfs4_create_referral_server() = error %d\n", error);
return ERR_PTR(error);
@@ -1483,7 +1505,7 @@ struct nfs_server *nfs_clone_server(struct nfs_server *source,
struct nfs_fattr *fattr)
{
struct nfs_server *server;
- struct nfs_fattr fattr_fsinfo;
+ struct nfs_fattr *fattr_fsinfo;
int error;
dprintk("--> nfs_clone_server(,%llx:%llx,)\n",
@@ -1494,6 +1516,11 @@ struct nfs_server *nfs_clone_server(struct nfs_server *source,
if (!server)
return ERR_PTR(-ENOMEM);
+ error = -ENOMEM;
+ fattr_fsinfo = nfs_alloc_fattr();
+ if (fattr_fsinfo == NULL)
+ goto out_free_server;
+
/* Copy data from the source */
server->nfs_client = source->nfs_client;
atomic_inc(&server->nfs_client->cl_count);
@@ -1510,7 +1537,7 @@ struct nfs_server *nfs_clone_server(struct nfs_server *source,
nfs_init_server_aclclient(server);
/* probe the filesystem info for this server filesystem */
- error = nfs_probe_fsinfo(server, fh, &fattr_fsinfo);
+ error = nfs_probe_fsinfo(server, fh, fattr_fsinfo);
if (error < 0)
goto out_free_server;
@@ -1532,10 +1559,12 @@ struct nfs_server *nfs_clone_server(struct nfs_server *source,
server->mount_time = jiffies;
+ nfs_free_fattr(fattr_fsinfo);
dprintk("<-- nfs_clone_server() = %p\n", server);
return server;
out_free_server:
+ nfs_free_fattr(fattr_fsinfo);
nfs_free_server(server);
dprintk("<-- nfs_clone_server() = error %d\n", error);
return ERR_PTR(error);
diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c
index 15671245c6e..30163454397 100644
--- a/fs/nfs/delegation.c
+++ b/fs/nfs/delegation.c
@@ -24,6 +24,8 @@
static void nfs_do_free_delegation(struct nfs_delegation *delegation)
{
+ if (delegation->cred)
+ put_rpccred(delegation->cred);
kfree(delegation);
}
@@ -36,13 +38,7 @@ static void nfs_free_delegation_callback(struct rcu_head *head)
static void nfs_free_delegation(struct nfs_delegation *delegation)
{
- struct rpc_cred *cred;
-
- cred = rcu_dereference(delegation->cred);
- rcu_assign_pointer(delegation->cred, NULL);
call_rcu(&delegation->rcu, nfs_free_delegation_callback);
- if (cred)
- put_rpccred(cred);
}
void nfs_mark_delegation_referenced(struct nfs_delegation *delegation)
@@ -129,21 +125,35 @@ again:
*/
void nfs_inode_reclaim_delegation(struct inode *inode, struct rpc_cred *cred, struct nfs_openres *res)
{
- struct nfs_delegation *delegation = NFS_I(inode)->delegation;
- struct rpc_cred *oldcred;
+ struct nfs_delegation *delegation;
+ struct rpc_cred *oldcred = NULL;
- if (delegation == NULL)
- return;
- memcpy(delegation->stateid.data, res->delegation.data,
- sizeof(delegation->stateid.data));
- delegation->type = res->delegation_type;
- delegation->maxsize = res->maxsize;
- oldcred = delegation->cred;
- delegation->cred = get_rpccred(cred);
- clear_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags);
- NFS_I(inode)->delegation_state = delegation->type;
- smp_wmb();
- put_rpccred(oldcred);
+ rcu_read_lock();
+ delegation = rcu_dereference(NFS_I(inode)->delegation);
+ if (delegation != NULL) {
+ spin_lock(&delegation->lock);
+ if (delegation->inode != NULL) {
+ memcpy(delegation->stateid.data, res->delegation.data,
+ sizeof(delegation->stateid.data));
+ delegation->type = res->delegation_type;
+ delegation->maxsize = res->maxsize;
+ oldcred = delegation->cred;
+ delegation->cred = get_rpccred(cred);
+ clear_bit(NFS_DELEGATION_NEED_RECLAIM,
+ &delegation->flags);
+ NFS_I(inode)->delegation_state = delegation->type;
+ spin_unlock(&delegation->lock);
+ put_rpccred(oldcred);
+ rcu_read_unlock();
+ } else {
+ /* We appear to have raced with a delegation return. */
+ spin_unlock(&delegation->lock);
+ rcu_read_unlock();
+ nfs_inode_set_delegation(inode, cred, res);
+ }
+ } else {
+ rcu_read_unlock();
+ }
}
static int nfs_do_return_delegation(struct inode *inode, struct nfs_delegation *delegation, int issync)
@@ -166,9 +176,13 @@ static struct inode *nfs_delegation_grab_inode(struct nfs_delegation *delegation
return inode;
}
-static struct nfs_delegation *nfs_detach_delegation_locked(struct nfs_inode *nfsi, const nfs4_stateid *stateid)
+static struct nfs_delegation *nfs_detach_delegation_locked(struct nfs_inode *nfsi,
+ const nfs4_stateid *stateid,
+ struct nfs_client *clp)
{
- struct nfs_delegation *delegation = rcu_dereference(nfsi->delegation);
+ struct nfs_delegation *delegation =
+ rcu_dereference_protected(nfsi->delegation,
+ lockdep_is_held(&clp->cl_lock));
if (delegation == NULL)
goto nomatch;
@@ -195,11 +209,11 @@ int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct
{
struct nfs_client *clp = NFS_SERVER(inode)->nfs_client;
struct nfs_inode *nfsi = NFS_I(inode);
- struct nfs_delegation *delegation;
+ struct nfs_delegation *delegation, *old_delegation;
struct nfs_delegation *freeme = NULL;
int status = 0;
- delegation = kmalloc(sizeof(*delegation), GFP_KERNEL);
+ delegation = kmalloc(sizeof(*delegation), GFP_NOFS);
if (delegation == NULL)
return -ENOMEM;
memcpy(delegation->stateid.data, res->delegation.data,
@@ -213,10 +227,12 @@ int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct
spin_lock_init(&delegation->lock);
spin_lock(&clp->cl_lock);
- if (rcu_dereference(nfsi->delegation) != NULL) {
- if (memcmp(&delegation->stateid, &nfsi->delegation->stateid,
- sizeof(delegation->stateid)) == 0 &&
- delegation->type == nfsi->delegation->type) {
+ old_delegation = rcu_dereference_protected(nfsi->delegation,
+ lockdep_is_held(&clp->cl_lock));
+ if (old_delegation != NULL) {
+ if (memcmp(&delegation->stateid, &old_delegation->stateid,
+ sizeof(old_delegation->stateid)) == 0 &&
+ delegation->type == old_delegation->type) {
goto out;
}
/*
@@ -226,12 +242,12 @@ int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct
dfprintk(FILE, "%s: server %s handed out "
"a duplicate delegation!\n",
__func__, clp->cl_hostname);
- if (delegation->type <= nfsi->delegation->type) {
+ if (delegation->type <= old_delegation->type) {
freeme = delegation;
delegation = NULL;
goto out;
}
- freeme = nfs_detach_delegation_locked(nfsi, NULL);
+ freeme = nfs_detach_delegation_locked(nfsi, NULL, clp);
}
list_add_rcu(&delegation->super_list, &clp->cl_delegations);
nfsi->delegation_state = delegation->type;
@@ -301,7 +317,7 @@ restart:
if (inode == NULL)
continue;
spin_lock(&clp->cl_lock);
- delegation = nfs_detach_delegation_locked(NFS_I(inode), NULL);
+ delegation = nfs_detach_delegation_locked(NFS_I(inode), NULL, clp);
spin_unlock(&clp->cl_lock);
rcu_read_unlock();
if (delegation != NULL) {
@@ -330,9 +346,9 @@ void nfs_inode_return_delegation_noreclaim(struct inode *inode)
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_delegation *delegation;
- if (rcu_dereference(nfsi->delegation) != NULL) {
+ if (rcu_access_pointer(nfsi->delegation) != NULL) {
spin_lock(&clp->cl_lock);
- delegation = nfs_detach_delegation_locked(nfsi, NULL);
+ delegation = nfs_detach_delegation_locked(nfsi, NULL, clp);
spin_unlock(&clp->cl_lock);
if (delegation != NULL)
nfs_do_return_delegation(inode, delegation, 0);
@@ -346,9 +362,9 @@ int nfs_inode_return_delegation(struct inode *inode)
struct nfs_delegation *delegation;
int err = 0;
- if (rcu_dereference(nfsi->delegation) != NULL) {
+ if (rcu_access_pointer(nfsi->delegation) != NULL) {
spin_lock(&clp->cl_lock);
- delegation = nfs_detach_delegation_locked(nfsi, NULL);
+ delegation = nfs_detach_delegation_locked(nfsi, NULL, clp);
spin_unlock(&clp->cl_lock);
if (delegation != NULL) {
nfs_msync_inode(inode);
@@ -526,7 +542,7 @@ restart:
if (inode == NULL)
continue;
spin_lock(&clp->cl_lock);
- delegation = nfs_detach_delegation_locked(NFS_I(inode), NULL);
+ delegation = nfs_detach_delegation_locked(NFS_I(inode), NULL, clp);
spin_unlock(&clp->cl_lock);
rcu_read_unlock();
if (delegation != NULL)
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index db3ad849a28..ee9a179ebdf 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -530,9 +530,7 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
nfs_readdir_descriptor_t my_desc,
*desc = &my_desc;
struct nfs_entry my_entry;
- struct nfs_fh fh;
- struct nfs_fattr fattr;
- long res;
+ int res = -ENOMEM;
dfprintk(FILE, "NFS: readdir(%s/%s) starting at cookie %llu\n",
dentry->d_parent->d_name.name, dentry->d_name.name,
@@ -554,9 +552,11 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
my_entry.cookie = my_entry.prev_cookie = 0;
my_entry.eof = 0;
- my_entry.fh = &fh;
- my_entry.fattr = &fattr;
- nfs_fattr_init(&fattr);
+ my_entry.fh = nfs_alloc_fhandle();
+ my_entry.fattr = nfs_alloc_fattr();
+ if (my_entry.fh == NULL || my_entry.fattr == NULL)
+ goto out_alloc_failed;
+
desc->entry = &my_entry;
nfs_block_sillyrename(dentry);
@@ -598,7 +598,10 @@ out:
nfs_unblock_sillyrename(dentry);
if (res > 0)
res = 0;
- dfprintk(FILE, "NFS: readdir(%s/%s) returns %ld\n",
+out_alloc_failed:
+ nfs_free_fattr(my_entry.fattr);
+ nfs_free_fhandle(my_entry.fh);
+ dfprintk(FILE, "NFS: readdir(%s/%s) returns %d\n",
dentry->d_parent->d_name.name, dentry->d_name.name,
res);
return res;
@@ -776,9 +779,9 @@ static int nfs_lookup_revalidate(struct dentry * dentry, struct nameidata *nd)
struct inode *dir;
struct inode *inode;
struct dentry *parent;
+ struct nfs_fh *fhandle = NULL;
+ struct nfs_fattr *fattr = NULL;
int error;
- struct nfs_fh fhandle;
- struct nfs_fattr fattr;
parent = dget_parent(dentry);
dir = parent->d_inode;
@@ -811,14 +814,22 @@ static int nfs_lookup_revalidate(struct dentry * dentry, struct nameidata *nd)
if (NFS_STALE(inode))
goto out_bad;
- error = NFS_PROTO(dir)->lookup(dir, &dentry->d_name, &fhandle, &fattr);
+ error = -ENOMEM;
+ fhandle = nfs_alloc_fhandle();
+ fattr = nfs_alloc_fattr();
+ if (fhandle == NULL || fattr == NULL)
+ goto out_error;
+
+ error = NFS_PROTO(dir)->lookup(dir, &dentry->d_name, fhandle, fattr);
if (error)
goto out_bad;
- if (nfs_compare_fh(NFS_FH(inode), &fhandle))
+ if (nfs_compare_fh(NFS_FH(inode), fhandle))
goto out_bad;
- if ((error = nfs_refresh_inode(inode, &fattr)) != 0)
+ if ((error = nfs_refresh_inode(inode, fattr)) != 0)
goto out_bad;
+ nfs_free_fattr(fattr);
+ nfs_free_fhandle(fhandle);
out_set_verifier:
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
out_valid:
@@ -842,11 +853,21 @@ out_zap_parent:
shrink_dcache_parent(dentry);
}
d_drop(dentry);
+ nfs_free_fattr(fattr);
+ nfs_free_fhandle(fhandle);
dput(parent);
dfprintk(LOOKUPCACHE, "NFS: %s(%s/%s) is invalid\n",
__func__, dentry->d_parent->d_name.name,
dentry->d_name.name);
return 0;
+out_error:
+ nfs_free_fattr(fattr);
+ nfs_free_fhandle(fhandle);
+ dput(parent);
+ dfprintk(LOOKUPCACHE, "NFS: %s(%s/%s) lookup returned error %d\n",
+ __func__, dentry->d_parent->d_name.name,
+ dentry->d_name.name, error);
+ return error;
}
/*
@@ -911,9 +932,9 @@ static struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, stru
struct dentry *res;
struct dentry *parent;
struct inode *inode = NULL;
+ struct nfs_fh *fhandle = NULL;
+ struct nfs_fattr *fattr = NULL;
int error;
- struct nfs_fh fhandle;
- struct nfs_fattr fattr;
dfprintk(VFS, "NFS: lookup(%s/%s)\n",
dentry->d_parent->d_name.name, dentry->d_name.name);
@@ -923,7 +944,6 @@ static struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, stru
if (dentry->d_name.len > NFS_SERVER(dir)->namelen)
goto out;
- res = ERR_PTR(-ENOMEM);
dentry->d_op = NFS_PROTO(dir)->dentry_ops;
/*
@@ -936,17 +956,23 @@ static struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, stru
goto out;
}
+ res = ERR_PTR(-ENOMEM);
+ fhandle = nfs_alloc_fhandle();
+ fattr = nfs_alloc_fattr();
+ if (fhandle == NULL || fattr == NULL)
+ goto out;
+
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- error = NFS_PROTO(dir)->lookup(dir, &dentry->d_name, &fhandle, &fattr);
+ error = NFS_PROTO(dir)->lookup(dir, &dentry->d_name, fhandle, fattr);
if (error == -ENOENT)
goto no_entry;
if (error < 0) {
res = ERR_PTR(error);
goto out_unblock_sillyrename;
}
- inode = nfs_fhget(dentry->d_sb, &fhandle, &fattr);
+ inode = nfs_fhget(dentry->d_sb, fhandle, fattr);
res = (struct dentry *)inode;
if (IS_ERR(res))
goto out_unblock_sillyrename;
@@ -962,6 +988,8 @@ no_entry:
out_unblock_sillyrename:
nfs_unblock_sillyrename(parent);
out:
+ nfs_free_fattr(fattr);
+ nfs_free_fhandle(fhandle);
return res;
}
@@ -1052,7 +1080,7 @@ static int nfs_open_revalidate(struct dentry *dentry, struct nameidata *nd)
struct inode *dir;
int openflags, ret = 0;
- if (!is_atomic_open(nd))
+ if (!is_atomic_open(nd) || d_mountpoint(dentry))
goto no_open;
parent = dget_parent(dentry);
dir = parent->d_inode;
@@ -1669,28 +1697,33 @@ static void nfs_access_free_entry(struct nfs_access_entry *entry)
smp_mb__after_atomic_dec();
}
+static void nfs_access_free_list(struct list_head *head)
+{
+ struct nfs_access_entry *cache;
+
+ while (!list_empty(head)) {
+ cache = list_entry(head->next, struct nfs_access_entry, lru);
+ list_del(&cache->lru);
+ nfs_access_free_entry(cache);
+ }
+}
+
int nfs_access_cache_shrinker(int nr_to_scan, gfp_t gfp_mask)
{
LIST_HEAD(head);
struct nfs_inode *nfsi;
struct nfs_access_entry *cache;
-restart:
+ if ((gfp_mask & GFP_KERNEL) != GFP_KERNEL)
+ return (nr_to_scan == 0) ? 0 : -1;
+
spin_lock(&nfs_access_lru_lock);
list_for_each_entry(nfsi, &nfs_access_lru_list, access_cache_inode_lru) {
- struct rw_semaphore *s_umount;
struct inode *inode;
if (nr_to_scan-- == 0)
break;
- s_umount = &nfsi->vfs_inode.i_sb->s_umount;
- if (!down_read_trylock(s_umount))
- continue;
- inode = igrab(&nfsi->vfs_inode);
- if (inode == NULL) {
- up_read(s_umount);
- continue;
- }
+ inode = &nfsi->vfs_inode;
spin_lock(&inode->i_lock);
if (list_empty(&nfsi->access_cache_entry_lru))
goto remove_lru_entry;
@@ -1704,61 +1737,47 @@ restart:
else {
remove_lru_entry:
list_del_init(&nfsi->access_cache_inode_lru);
+ smp_mb__before_clear_bit();
clear_bit(NFS_INO_ACL_LRU_SET, &nfsi->flags);
+ smp_mb__after_clear_bit();
}
- spin_unlock(&inode->i_lock);
- spin_unlock(&nfs_access_lru_lock);
- iput(inode);
- up_read(s_umount);
- goto restart;
}
spin_unlock(&nfs_access_lru_lock);
- while (!list_empty(&head)) {
- cache = list_entry(head.next, struct nfs_access_entry, lru);
- list_del(&cache->lru);
- nfs_access_free_entry(cache);
- }
+ nfs_access_free_list(&head);
return (atomic_long_read(&nfs_access_nr_entries) / 100) * sysctl_vfs_cache_pressure;
}
-static void __nfs_access_zap_cache(struct inode *inode)
+static void __nfs_access_zap_cache(struct nfs_inode *nfsi, struct list_head *head)
{
- struct nfs_inode *nfsi = NFS_I(inode);
struct rb_root *root_node = &nfsi->access_cache;
- struct rb_node *n, *dispose = NULL;
+ struct rb_node *n;
struct nfs_access_entry *entry;
/* Unhook entries from the cache */
while ((n = rb_first(root_node)) != NULL) {
entry = rb_entry(n, struct nfs_access_entry, rb_node);
rb_erase(n, root_node);
- list_del(&entry->lru);
- n->rb_left = dispose;
- dispose = n;
+ list_move(&entry->lru, head);
}
nfsi->cache_validity &= ~NFS_INO_INVALID_ACCESS;
- spin_unlock(&inode->i_lock);
-
- /* Now kill them all! */
- while (dispose != NULL) {
- n = dispose;
- dispose = n->rb_left;
- nfs_access_free_entry(rb_entry(n, struct nfs_access_entry, rb_node));
- }
}
void nfs_access_zap_cache(struct inode *inode)
{
+ LIST_HEAD(head);
+
+ if (test_bit(NFS_INO_ACL_LRU_SET, &NFS_I(inode)->flags) == 0)
+ return;
/* Remove from global LRU init */
- if (test_and_clear_bit(NFS_INO_ACL_LRU_SET, &NFS_I(inode)->flags)) {
- spin_lock(&nfs_access_lru_lock);
+ spin_lock(&nfs_access_lru_lock);
+ if (test_and_clear_bit(NFS_INO_ACL_LRU_SET, &NFS_I(inode)->flags))
list_del_init(&NFS_I(inode)->access_cache_inode_lru);
- spin_unlock(&nfs_access_lru_lock);
- }
spin_lock(&inode->i_lock);
- /* This will release the spinlock */
- __nfs_access_zap_cache(inode);
+ __nfs_access_zap_cache(NFS_I(inode), &head);
+ spin_unlock(&inode->i_lock);
+ spin_unlock(&nfs_access_lru_lock);
+ nfs_access_free_list(&head);
}
static struct nfs_access_entry *nfs_access_search_rbtree(struct inode *inode, struct rpc_cred *cred)
@@ -1809,8 +1828,8 @@ out_stale:
nfs_access_free_entry(cache);
return -ENOENT;
out_zap:
- /* This will release the spinlock */
- __nfs_access_zap_cache(inode);
+ spin_unlock(&inode->i_lock);
+ nfs_access_zap_cache(inode);
return -ENOENT;
}
@@ -1865,9 +1884,11 @@ static void nfs_access_add_cache(struct inode *inode, struct nfs_access_entry *s
smp_mb__after_atomic_inc();
/* Add inode to global LRU list */
- if (!test_and_set_bit(NFS_INO_ACL_LRU_SET, &NFS_I(inode)->flags)) {
+ if (!test_bit(NFS_INO_ACL_LRU_SET, &NFS_I(inode)->flags)) {
spin_lock(&nfs_access_lru_lock);
- list_add_tail(&NFS_I(inode)->access_cache_inode_lru, &nfs_access_lru_list);
+ if (!test_and_set_bit(NFS_INO_ACL_LRU_SET, &NFS_I(inode)->flags))
+ list_add_tail(&NFS_I(inode)->access_cache_inode_lru,
+ &nfs_access_lru_list);
spin_unlock(&nfs_access_lru_lock);
}
}
diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index 8d965bddb87..cac96bcc91e 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -161,14 +161,17 @@ static int nfs_revalidate_file_size(struct inode *inode, struct file *filp)
struct nfs_server *server = NFS_SERVER(inode);
struct nfs_inode *nfsi = NFS_I(inode);
- if (server->flags & NFS_MOUNT_NOAC)
- goto force_reval;
+ if (nfs_have_delegated_attributes(inode))
+ goto out_noreval;
+
if (filp->f_flags & O_DIRECT)
goto force_reval;
- if (nfsi->npages != 0)
- return 0;
- if (!(nfsi->cache_validity & NFS_INO_REVAL_PAGECACHE) && !nfs_attribute_timeout(inode))
- return 0;
+ if (nfsi->cache_validity & NFS_INO_REVAL_PAGECACHE)
+ goto force_reval;
+ if (nfs_attribute_timeout(inode))
+ goto force_reval;
+out_noreval:
+ return 0;
force_reval:
return __nfs_revalidate_inode(server, inode);
}
diff --git a/fs/nfs/fscache.c b/fs/nfs/fscache.c
index a6b16ed9322..ce153a6b3ae 100644
--- a/fs/nfs/fscache.c
+++ b/fs/nfs/fscache.c
@@ -467,7 +467,8 @@ int __nfs_readpages_from_fscache(struct nfs_open_context *ctx,
struct list_head *pages,
unsigned *nr_pages)
{
- int ret, npages = *nr_pages;
+ unsigned npages = *nr_pages;
+ int ret;
dfprintk(FSCACHE, "NFS: nfs_getpages_from_fscache (0x%p/%u/0x%p)\n",
NFS_I(inode)->fscache, npages, inode);
diff --git a/fs/nfs/getroot.c b/fs/nfs/getroot.c
index b35d2a61606..7428f7d6273 100644
--- a/fs/nfs/getroot.c
+++ b/fs/nfs/getroot.c
@@ -78,159 +78,94 @@ struct dentry *nfs_get_root(struct super_block *sb, struct nfs_fh *mntfh)
{
struct nfs_server *server = NFS_SB(sb);
struct nfs_fsinfo fsinfo;
- struct nfs_fattr fattr;
- struct dentry *mntroot;
+ struct dentry *ret;
struct inode *inode;
int error;
/* get the actual root for this mount */
- fsinfo.fattr = &fattr;
+ fsinfo.fattr = nfs_alloc_fattr();
+ if (fsinfo.fattr == NULL)
+ return ERR_PTR(-ENOMEM);
error = server->nfs_client->rpc_ops->getroot(server, mntfh, &fsinfo);
if (error < 0) {
dprintk("nfs_get_root: getattr error = %d\n", -error);
- return ERR_PTR(error);
+ ret = ERR_PTR(error);
+ goto out;
}
inode = nfs_fhget(sb, mntfh, fsinfo.fattr);
if (IS_ERR(inode)) {
dprintk("nfs_get_root: get root inode failed\n");
- return ERR_CAST(inode);
+ ret = ERR_CAST(inode);
+ goto out;
}
error = nfs_superblock_set_dummy_root(sb, inode);
- if (error != 0)
- return ERR_PTR(error);
+ if (error != 0) {
+ ret = ERR_PTR(error);
+ goto out;
+ }
/* root dentries normally start off anonymous and get spliced in later
* if the dentry tree reaches them; however if the dentry already
* exists, we'll pick it up at this point and use it as the root
*/
- mntroot = d_obtain_alias(inode);
- if (IS_ERR(mntroot)) {
+ ret = d_obtain_alias(inode);
+ if (IS_ERR(ret)) {
dprintk("nfs_get_root: get root dentry failed\n");
- return mntroot;
+ goto out;
}
- security_d_instantiate(mntroot, inode);
-
- if (!mntroot->d_op)
- mntroot->d_op = server->nfs_client->rpc_ops->dentry_ops;
+ security_d_instantiate(ret, inode);
- return mntroot;
+ if (ret->d_op == NULL)
+ ret->d_op = server->nfs_client->rpc_ops->dentry_ops;
+out:
+ nfs_free_fattr(fsinfo.fattr);
+ return ret;
}
#ifdef CONFIG_NFS_V4
-/*
- * Do a simple pathwalk from the root FH of the server to the nominated target
- * of the mountpoint
- * - give error on symlinks
- * - give error on ".." occurring in the path
- * - follow traversals
- */
-int nfs4_path_walk(struct nfs_server *server,
- struct nfs_fh *mntfh,
- const char *path)
+int nfs4_get_rootfh(struct nfs_server *server, struct nfs_fh *mntfh)
{
struct nfs_fsinfo fsinfo;
- struct nfs_fattr fattr;
- struct nfs_fh lastfh;
- struct qstr name;
- int ret;
+ int ret = -ENOMEM;
- dprintk("--> nfs4_path_walk(,,%s)\n", path);
+ dprintk("--> nfs4_get_rootfh()\n");
- fsinfo.fattr = &fattr;
- nfs_fattr_init(&fattr);
-
- /* Eat leading slashes */
- while (*path == '/')
- path++;
+ fsinfo.fattr = nfs_alloc_fattr();
+ if (fsinfo.fattr == NULL)
+ goto out;
/* Start by getting the root filehandle from the server */
ret = server->nfs_client->rpc_ops->getroot(server, mntfh, &fsinfo);
if (ret < 0) {
- dprintk("nfs4_get_root: getroot error = %d\n", -ret);
- return ret;
+ dprintk("nfs4_get_rootfh: getroot error = %d\n", -ret);
+ goto out;
}
- if (!S_ISDIR(fattr.mode)) {
- printk(KERN_ERR "nfs4_get_root:"
+ if (!(fsinfo.fattr->valid & NFS_ATTR_FATTR_MODE)
+ || !S_ISDIR(fsinfo.fattr->mode)) {
+ printk(KERN_ERR "nfs4_get_rootfh:"
" getroot encountered non-directory\n");
- return -ENOTDIR;
+ ret = -ENOTDIR;
+ goto out;
}
- /* FIXME: It is quite valid for the server to return a referral here */
- if (fattr.valid & NFS_ATTR_FATTR_V4_REFERRAL) {
- printk(KERN_ERR "nfs4_get_root:"
+ if (fsinfo.fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL) {
+ printk(KERN_ERR "nfs4_get_rootfh:"
" getroot obtained referral\n");
- return -EREMOTE;
- }
-
-next_component:
- dprintk("Next: %s\n", path);
-
- /* extract the next bit of the path */
- if (!*path)
- goto path_walk_complete;
-
- name.name = path;
- while (*path && *path != '/')
- path++;
- name.len = path - (const char *) name.name;
-
- if (name.len > NFS4_MAXNAMLEN)
- return -ENAMETOOLONG;
-
-eat_dot_dir:
- while (*path == '/')
- path++;
-
- if (path[0] == '.' && (path[1] == '/' || !path[1])) {
- path += 2;
- goto eat_dot_dir;
- }
-
- /* FIXME: Why shouldn't the user be able to use ".." in the path? */
- if (path[0] == '.' && path[1] == '.' && (path[2] == '/' || !path[2])
- ) {
- printk(KERN_ERR "nfs4_get_root:"
- " Mount path contains reference to \"..\"\n");
- return -EINVAL;
+ ret = -EREMOTE;
+ goto out;
}
- /* lookup the next FH in the sequence */
- memcpy(&lastfh, mntfh, sizeof(lastfh));
-
- dprintk("LookupFH: %*.*s [%s]\n", name.len, name.len, name.name, path);
-
- ret = server->nfs_client->rpc_ops->lookupfh(server, &lastfh, &name,
- mntfh, &fattr);
- if (ret < 0) {
- dprintk("nfs4_get_root: getroot error = %d\n", -ret);
- return ret;
- }
-
- if (!S_ISDIR(fattr.mode)) {
- printk(KERN_ERR "nfs4_get_root:"
- " lookupfh encountered non-directory\n");
- return -ENOTDIR;
- }
-
- /* FIXME: Referrals are quite valid here too */
- if (fattr.valid & NFS_ATTR_FATTR_V4_REFERRAL) {
- printk(KERN_ERR "nfs4_get_root:"
- " lookupfh obtained referral\n");
- return -EREMOTE;
- }
-
- goto next_component;
-
-path_walk_complete:
- memcpy(&server->fsid, &fattr.fsid, sizeof(server->fsid));
- dprintk("<-- nfs4_path_walk() = 0\n");
- return 0;
+ memcpy(&server->fsid, &fsinfo.fattr->fsid, sizeof(server->fsid));
+out:
+ nfs_free_fattr(fsinfo.fattr);
+ dprintk("<-- nfs4_get_rootfh() = %d\n", ret);
+ return ret;
}
/*
@@ -239,8 +174,8 @@ path_walk_complete:
struct dentry *nfs4_get_root(struct super_block *sb, struct nfs_fh *mntfh)
{
struct nfs_server *server = NFS_SB(sb);
- struct nfs_fattr fattr;
- struct dentry *mntroot;
+ struct nfs_fattr *fattr = NULL;
+ struct dentry *ret;
struct inode *inode;
int error;
@@ -254,40 +189,50 @@ struct dentry *nfs4_get_root(struct super_block *sb, struct nfs_fh *mntfh)
return ERR_PTR(error);
}
+ fattr = nfs_alloc_fattr();
+ if (fattr == NULL)
+ return ERR_PTR(-ENOMEM);;
+
/* get the actual root for this mount */
- error = server->nfs_client->rpc_ops->getattr(server, mntfh, &fattr);
+ error = server->nfs_client->rpc_ops->getattr(server, mntfh, fattr);
if (error < 0) {
dprintk("nfs_get_root: getattr error = %d\n", -error);
- return ERR_PTR(error);
+ ret = ERR_PTR(error);
+ goto out;
}
- inode = nfs_fhget(sb, mntfh, &fattr);
+ inode = nfs_fhget(sb, mntfh, fattr);
if (IS_ERR(inode)) {
dprintk("nfs_get_root: get root inode failed\n");
- return ERR_CAST(inode);
+ ret = ERR_CAST(inode);
+ goto out;
}
error = nfs_superblock_set_dummy_root(sb, inode);
- if (error != 0)
- return ERR_PTR(error);
+ if (error != 0) {
+ ret = ERR_PTR(error);
+ goto out;
+ }
/* root dentries normally start off anonymous and get spliced in later
* if the dentry tree reaches them; however if the dentry already
* exists, we'll pick it up at this point and use it as the root
*/
- mntroot = d_obtain_alias(inode);
- if (IS_ERR(mntroot)) {
+ ret = d_obtain_alias(inode);
+ if (IS_ERR(ret)) {
dprintk("nfs_get_root: get root dentry failed\n");
- return mntroot;
+ goto out;
}
- security_d_instantiate(mntroot, inode);
+ security_d_instantiate(ret, inode);
- if (!mntroot->d_op)
- mntroot->d_op = server->nfs_client->rpc_ops->dentry_ops;
+ if (ret->d_op == NULL)
+ ret->d_op = server->nfs_client->rpc_ops->dentry_ops;
+out:
+ nfs_free_fattr(fattr);
dprintk("<-- nfs4_get_root()\n");
- return mntroot;
+ return ret;
}
#endif /* CONFIG_NFS_V4 */
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 50a56edca0b..099b3518fee 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -393,8 +393,8 @@ int
nfs_setattr(struct dentry *dentry, struct iattr *attr)
{
struct inode *inode = dentry->d_inode;
- struct nfs_fattr fattr;
- int error;
+ struct nfs_fattr *fattr;
+ int error = -ENOMEM;
nfs_inc_stats(inode, NFSIOS_VFSSETATTR);
@@ -417,14 +417,20 @@ nfs_setattr(struct dentry *dentry, struct iattr *attr)
filemap_write_and_wait(inode->i_mapping);
nfs_wb_all(inode);
}
+
+ fattr = nfs_alloc_fattr();
+ if (fattr == NULL)
+ goto out;
/*
* Return any delegations if we're going to change ACLs
*/
if ((attr->ia_valid & (ATTR_MODE|ATTR_UID|ATTR_GID)) != 0)
nfs_inode_return_delegation(inode);
- error = NFS_PROTO(inode)->setattr(dentry, &fattr, attr);
+ error = NFS_PROTO(inode)->setattr(dentry, fattr, attr);
if (error == 0)
- nfs_refresh_inode(inode, &fattr);
+ nfs_refresh_inode(inode, fattr);
+ nfs_free_fattr(fattr);
+out:
return error;
}
@@ -682,7 +688,7 @@ int
__nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
{
int status = -ESTALE;
- struct nfs_fattr fattr;
+ struct nfs_fattr *fattr = NULL;
struct nfs_inode *nfsi = NFS_I(inode);
dfprintk(PAGECACHE, "NFS: revalidating (%s/%Ld)\n",
@@ -693,8 +699,13 @@ __nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
if (NFS_STALE(inode))
goto out;
+ status = -ENOMEM;
+ fattr = nfs_alloc_fattr();
+ if (fattr == NULL)
+ goto out;
+
nfs_inc_stats(inode, NFSIOS_INODEREVALIDATE);
- status = NFS_PROTO(inode)->getattr(server, NFS_FH(inode), &fattr);
+ status = NFS_PROTO(inode)->getattr(server, NFS_FH(inode), fattr);
if (status != 0) {
dfprintk(PAGECACHE, "nfs_revalidate_inode: (%s/%Ld) getattr failed, error=%d\n",
inode->i_sb->s_id,
@@ -707,7 +718,7 @@ __nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
goto out;
}
- status = nfs_refresh_inode(inode, &fattr);
+ status = nfs_refresh_inode(inode, fattr);
if (status) {
dfprintk(PAGECACHE, "nfs_revalidate_inode: (%s/%Ld) refresh failed, error=%d\n",
inode->i_sb->s_id,
@@ -723,6 +734,7 @@ __nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
(long long)NFS_FILEID(inode));
out:
+ nfs_free_fattr(fattr);
return status;
}
@@ -730,9 +742,14 @@ int nfs_attribute_timeout(struct inode *inode)
{
struct nfs_inode *nfsi = NFS_I(inode);
+ return !time_in_range_open(jiffies, nfsi->read_cache_jiffies, nfsi->read_cache_jiffies + nfsi->attrtimeo);
+}
+
+static int nfs_attribute_cache_expired(struct inode *inode)
+{
if (nfs_have_delegated_attributes(inode))
return 0;
- return !time_in_range_open(jiffies, nfsi->read_cache_jiffies, nfsi->read_cache_jiffies + nfsi->attrtimeo);
+ return nfs_attribute_timeout(inode);
}
/**
@@ -745,7 +762,7 @@ int nfs_attribute_timeout(struct inode *inode)
int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
{
if (!(NFS_I(inode)->cache_validity & NFS_INO_INVALID_ATTR)
- && !nfs_attribute_timeout(inode))
+ && !nfs_attribute_cache_expired(inode))
return NFS_STALE(inode) ? -ESTALE : 0;
return __nfs_revalidate_inode(server, inode);
}
@@ -782,7 +799,8 @@ int nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping)
int ret = 0;
if ((nfsi->cache_validity & NFS_INO_REVAL_PAGECACHE)
- || nfs_attribute_timeout(inode) || NFS_STALE(inode)) {
+ || nfs_attribute_cache_expired(inode)
+ || NFS_STALE(inode)) {
ret = __nfs_revalidate_inode(NFS_SERVER(inode), inode);
if (ret < 0)
goto out;
@@ -916,6 +934,26 @@ void nfs_fattr_init(struct nfs_fattr *fattr)
fattr->gencount = nfs_inc_attr_generation_counter();
}
+struct nfs_fattr *nfs_alloc_fattr(void)
+{
+ struct nfs_fattr *fattr;
+
+ fattr = kmalloc(sizeof(*fattr), GFP_NOFS);
+ if (fattr != NULL)
+ nfs_fattr_init(fattr);
+ return fattr;
+}
+
+struct nfs_fh *nfs_alloc_fhandle(void)
+{
+ struct nfs_fh *fh;
+
+ fh = kmalloc(sizeof(struct nfs_fh), GFP_NOFS);
+ if (fh != NULL)
+ fh->size = 0;
+ return fh;
+}
+
/**
* nfs_inode_attrs_need_update - check if the inode attributes need updating
* @inode - pointer to inode
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 11f82f03c5d..d8bd619e386 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -244,9 +244,7 @@ extern struct dentry *nfs_get_root(struct super_block *, struct nfs_fh *);
#ifdef CONFIG_NFS_V4
extern struct dentry *nfs4_get_root(struct super_block *, struct nfs_fh *);
-extern int nfs4_path_walk(struct nfs_server *server,
- struct nfs_fh *mntfh,
- const char *path);
+extern int nfs4_get_rootfh(struct nfs_server *server, struct nfs_fh *mntfh);
#endif
/* read.c */
diff --git a/fs/nfs/iostat.h b/fs/nfs/iostat.h
index 1d8d5c813b0..c5832487c45 100644
--- a/fs/nfs/iostat.h
+++ b/fs/nfs/iostat.h
@@ -36,14 +36,14 @@ static inline void nfs_inc_stats(const struct inode *inode,
static inline void nfs_add_server_stats(const struct nfs_server *server,
enum nfs_stat_bytecounters stat,
- unsigned long addend)
+ long addend)
{
this_cpu_add(server->io_stats->bytes[stat], addend);
}
static inline void nfs_add_stats(const struct inode *inode,
enum nfs_stat_bytecounters stat,
- unsigned long addend)
+ long addend)
{
nfs_add_server_stats(NFS_SERVER(inode), stat, addend);
}
@@ -51,7 +51,7 @@ static inline void nfs_add_stats(const struct inode *inode,
#ifdef CONFIG_NFS_FSCACHE
static inline void nfs_add_fscache_stats(struct inode *inode,
enum nfs_stat_fscachecounters stat,
- unsigned long addend)
+ long addend)
{
this_cpu_add(NFS_SERVER(inode)->io_stats->fscache[stat], addend);
}
diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c
index 7888cf36022..db6aa3673cf 100644
--- a/fs/nfs/namespace.c
+++ b/fs/nfs/namespace.c
@@ -105,8 +105,8 @@ static void * nfs_follow_mountpoint(struct dentry *dentry, struct nameidata *nd)
struct vfsmount *mnt;
struct nfs_server *server = NFS_SERVER(dentry->d_inode);
struct dentry *parent;
- struct nfs_fh fh;
- struct nfs_fattr fattr;
+ struct nfs_fh *fh = NULL;
+ struct nfs_fattr *fattr = NULL;
int err;
dprintk("--> nfs_follow_mountpoint()\n");
@@ -115,6 +115,12 @@ static void * nfs_follow_mountpoint(struct dentry *dentry, struct nameidata *nd)
if (IS_ROOT(dentry))
goto out_err;
+ err = -ENOMEM;
+ fh = nfs_alloc_fhandle();
+ fattr = nfs_alloc_fattr();
+ if (fh == NULL || fattr == NULL)
+ goto out_err;
+
dprintk("%s: enter\n", __func__);
dput(nd->path.dentry);
nd->path.dentry = dget(dentry);
@@ -123,16 +129,16 @@ static void * nfs_follow_mountpoint(struct dentry *dentry, struct nameidata *nd)
parent = dget_parent(nd->path.dentry);
err = server->nfs_client->rpc_ops->lookup(parent->d_inode,
&nd->path.dentry->d_name,
- &fh, &fattr);
+ fh, fattr);
dput(parent);
if (err != 0)
goto out_err;
- if (fattr.valid & NFS_ATTR_FATTR_V4_REFERRAL)
+ if (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL)
mnt = nfs_do_refmount(nd->path.mnt, nd->path.dentry);
else
- mnt = nfs_do_submount(nd->path.mnt, nd->path.dentry, &fh,
- &fattr);
+ mnt = nfs_do_submount(nd->path.mnt, nd->path.dentry, fh,
+ fattr);
err = PTR_ERR(mnt);
if (IS_ERR(mnt))
goto out_err;
@@ -151,6 +157,8 @@ static void * nfs_follow_mountpoint(struct dentry *dentry, struct nameidata *nd)
nd->path.dentry = dget(mnt->mnt_root);
schedule_delayed_work(&nfs_automount_task, nfs_mountpoint_expiry_timeout);
out:
+ nfs_free_fattr(fattr);
+ nfs_free_fhandle(fh);
dprintk("%s: done, returned %d\n", __func__, err);
dprintk("<-- nfs_follow_mountpoint() = %d\n", err);
diff --git a/fs/nfs/nfs3acl.c b/fs/nfs/nfs3acl.c
index d150ae0c5ec..9f88c5f4c7e 100644
--- a/fs/nfs/nfs3acl.c
+++ b/fs/nfs/nfs3acl.c
@@ -185,7 +185,6 @@ static void nfs3_cache_acls(struct inode *inode, struct posix_acl *acl,
struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type)
{
struct nfs_server *server = NFS_SERVER(inode);
- struct nfs_fattr fattr;
struct page *pages[NFSACL_MAXPAGES] = { };
struct nfs3_getaclargs args = {
.fh = NFS_FH(inode),
@@ -193,7 +192,7 @@ struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type)
.pages = pages,
};
struct nfs3_getaclres res = {
- .fattr = &fattr,
+ 0
};
struct rpc_message msg = {
.rpc_argp = &args,
@@ -228,7 +227,10 @@ struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type)
dprintk("NFS call getacl\n");
msg.rpc_proc = &server->client_acl->cl_procinfo[ACLPROC3_GETACL];
- nfs_fattr_init(&fattr);
+ res.fattr = nfs_alloc_fattr();
+ if (res.fattr == NULL)
+ return ERR_PTR(-ENOMEM);
+
status = rpc_call_sync(server->client_acl, &msg, 0);
dprintk("NFS reply getacl: %d\n", status);
@@ -238,7 +240,7 @@ struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type)
switch (status) {
case 0:
- status = nfs_refresh_inode(inode, &fattr);
+ status = nfs_refresh_inode(inode, res.fattr);
break;
case -EPFNOSUPPORT:
case -EPROTONOSUPPORT:
@@ -278,6 +280,7 @@ struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type)
getout:
posix_acl_release(res.acl_access);
posix_acl_release(res.acl_default);
+ nfs_free_fattr(res.fattr);
if (status != 0) {
posix_acl_release(acl);
@@ -290,7 +293,7 @@ static int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl,
struct posix_acl *dfacl)
{
struct nfs_server *server = NFS_SERVER(inode);
- struct nfs_fattr fattr;
+ struct nfs_fattr *fattr;
struct page *pages[NFSACL_MAXPAGES];
struct nfs3_setaclargs args = {
.inode = inode,
@@ -335,8 +338,13 @@ static int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl,
}
dprintk("NFS call setacl\n");
+ status = -ENOMEM;
+ fattr = nfs_alloc_fattr();
+ if (fattr == NULL)
+ goto out_freepages;
+
msg.rpc_proc = &server->client_acl->cl_procinfo[ACLPROC3_SETACL];
- nfs_fattr_init(&fattr);
+ msg.rpc_resp = fattr;
status = rpc_call_sync(server->client_acl, &msg, 0);
nfs_access_zap_cache(inode);
nfs_zap_acl_cache(inode);
@@ -344,7 +352,7 @@ static int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl,
switch (status) {
case 0:
- status = nfs_refresh_inode(inode, &fattr);
+ status = nfs_refresh_inode(inode, fattr);
nfs3_cache_acls(inode, acl, dfacl);
break;
case -EPFNOSUPPORT:
@@ -355,6 +363,7 @@ static int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl,
case -ENOTSUPP:
status = -EOPNOTSUPP;
}
+ nfs_free_fattr(fattr);
out_freepages:
while (args.npages != 0) {
args.npages--;
diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c
index e701002694e..fabb4f2849a 100644
--- a/fs/nfs/nfs3proc.c
+++ b/fs/nfs/nfs3proc.c
@@ -144,14 +144,12 @@ static int
nfs3_proc_lookup(struct inode *dir, struct qstr *name,
struct nfs_fh *fhandle, struct nfs_fattr *fattr)
{
- struct nfs_fattr dir_attr;
struct nfs3_diropargs arg = {
.fh = NFS_FH(dir),
.name = name->name,
.len = name->len
};
struct nfs3_diropres res = {
- .dir_attr = &dir_attr,
.fh = fhandle,
.fattr = fattr
};
@@ -163,29 +161,30 @@ nfs3_proc_lookup(struct inode *dir, struct qstr *name,
int status;
dprintk("NFS call lookup %s\n", name->name);
- nfs_fattr_init(&dir_attr);
+ res.dir_attr = nfs_alloc_fattr();
+ if (res.dir_attr == NULL)
+ return -ENOMEM;
+
nfs_fattr_init(fattr);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
- nfs_refresh_inode(dir, &dir_attr);
+ nfs_refresh_inode(dir, res.dir_attr);
if (status >= 0 && !(fattr->valid & NFS_ATTR_FATTR)) {
msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR];
msg.rpc_argp = fhandle;
msg.rpc_resp = fattr;
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
}
+ nfs_free_fattr(res.dir_attr);
dprintk("NFS reply lookup: %d\n", status);
return status;
}
static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry)
{
- struct nfs_fattr fattr;
struct nfs3_accessargs arg = {
.fh = NFS_FH(inode),
};
- struct nfs3_accessres res = {
- .fattr = &fattr,
- };
+ struct nfs3_accessres res;
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_ACCESS],
.rpc_argp = &arg,
@@ -193,7 +192,7 @@ static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry)
.rpc_cred = entry->cred,
};
int mode = entry->mask;
- int status;
+ int status = -ENOMEM;
dprintk("NFS call access\n");
@@ -210,9 +209,13 @@ static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry)
if (mode & MAY_EXEC)
arg.access |= NFS3_ACCESS_EXECUTE;
}
- nfs_fattr_init(&fattr);
+
+ res.fattr = nfs_alloc_fattr();
+ if (res.fattr == NULL)
+ goto out;
+
status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
- nfs_refresh_inode(inode, &fattr);
+ nfs_refresh_inode(inode, res.fattr);
if (status == 0) {
entry->mask = 0;
if (res.access & NFS3_ACCESS_READ)
@@ -222,6 +225,8 @@ static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry)
if (res.access & (NFS3_ACCESS_LOOKUP|NFS3_ACCESS_EXECUTE))
entry->mask |= MAY_EXEC;
}
+ nfs_free_fattr(res.fattr);
+out:
dprintk("NFS reply access: %d\n", status);
return status;
}
@@ -229,7 +234,7 @@ static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry)
static int nfs3_proc_readlink(struct inode *inode, struct page *page,
unsigned int pgbase, unsigned int pglen)
{
- struct nfs_fattr fattr;
+ struct nfs_fattr *fattr;
struct nfs3_readlinkargs args = {
.fh = NFS_FH(inode),
.pgbase = pgbase,
@@ -239,14 +244,19 @@ static int nfs3_proc_readlink(struct inode *inode, struct page *page,
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_READLINK],
.rpc_argp = &args,
- .rpc_resp = &fattr,
};
- int status;
+ int status = -ENOMEM;
dprintk("NFS call readlink\n");
- nfs_fattr_init(&fattr);
+ fattr = nfs_alloc_fattr();
+ if (fattr == NULL)
+ goto out;
+ msg.rpc_resp = fattr;
+
status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
- nfs_refresh_inode(inode, &fattr);
+ nfs_refresh_inode(inode, fattr);
+ nfs_free_fattr(fattr);
+out:
dprintk("NFS reply readlink: %d\n", status);
return status;
}
@@ -396,12 +406,17 @@ nfs3_proc_remove(struct inode *dir, struct qstr *name)
.rpc_argp = &arg,
.rpc_resp = &res,
};
- int status;
+ int status = -ENOMEM;
dprintk("NFS call remove %s\n", name->name);
- nfs_fattr_init(&res.dir_attr);
+ res.dir_attr = nfs_alloc_fattr();
+ if (res.dir_attr == NULL)
+ goto out;
+
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
- nfs_post_op_update_inode(dir, &res.dir_attr);
+ nfs_post_op_update_inode(dir, res.dir_attr);
+ nfs_free_fattr(res.dir_attr);
+out:
dprintk("NFS reply remove: %d\n", status);
return status;
}
@@ -419,7 +434,7 @@ nfs3_proc_unlink_done(struct rpc_task *task, struct inode *dir)
if (nfs3_async_handle_jukebox(task, dir))
return 0;
res = task->tk_msg.rpc_resp;
- nfs_post_op_update_inode(dir, &res->dir_attr);
+ nfs_post_op_update_inode(dir, res->dir_attr);
return 1;
}
@@ -427,7 +442,6 @@ static int
nfs3_proc_rename(struct inode *old_dir, struct qstr *old_name,
struct inode *new_dir, struct qstr *new_name)
{
- struct nfs_fattr old_dir_attr, new_dir_attr;
struct nfs3_renameargs arg = {
.fromfh = NFS_FH(old_dir),
.fromname = old_name->name,
@@ -436,23 +450,27 @@ nfs3_proc_rename(struct inode *old_dir, struct qstr *old_name,
.toname = new_name->name,
.tolen = new_name->len
};
- struct nfs3_renameres res = {
- .fromattr = &old_dir_attr,
- .toattr = &new_dir_attr
- };
+ struct nfs3_renameres res;
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_RENAME],
.rpc_argp = &arg,
.rpc_resp = &res,
};
- int status;
+ int status = -ENOMEM;
dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name);
- nfs_fattr_init(&old_dir_attr);
- nfs_fattr_init(&new_dir_attr);
+
+ res.fromattr = nfs_alloc_fattr();
+ res.toattr = nfs_alloc_fattr();
+ if (res.fromattr == NULL || res.toattr == NULL)
+ goto out;
+
status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0);
- nfs_post_op_update_inode(old_dir, &old_dir_attr);
- nfs_post_op_update_inode(new_dir, &new_dir_attr);
+ nfs_post_op_update_inode(old_dir, res.fromattr);
+ nfs_post_op_update_inode(new_dir, res.toattr);
+out:
+ nfs_free_fattr(res.toattr);
+ nfs_free_fattr(res.fromattr);
dprintk("NFS reply rename: %d\n", status);
return status;
}
@@ -460,30 +478,32 @@ nfs3_proc_rename(struct inode *old_dir, struct qstr *old_name,
static int
nfs3_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
{
- struct nfs_fattr dir_attr, fattr;
struct nfs3_linkargs arg = {
.fromfh = NFS_FH(inode),
.tofh = NFS_FH(dir),
.toname = name->name,
.tolen = name->len
};
- struct nfs3_linkres res = {
- .dir_attr = &dir_attr,
- .fattr = &fattr
- };
+ struct nfs3_linkres res;
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_LINK],
.rpc_argp = &arg,
.rpc_resp = &res,
};
- int status;
+ int status = -ENOMEM;
dprintk("NFS call link %s\n", name->name);
- nfs_fattr_init(&dir_attr);
- nfs_fattr_init(&fattr);
+ res.fattr = nfs_alloc_fattr();
+ res.dir_attr = nfs_alloc_fattr();
+ if (res.fattr == NULL || res.dir_attr == NULL)
+ goto out;
+
status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
- nfs_post_op_update_inode(dir, &dir_attr);
- nfs_post_op_update_inode(inode, &fattr);
+ nfs_post_op_update_inode(dir, res.dir_attr);
+ nfs_post_op_update_inode(inode, res.fattr);
+out:
+ nfs_free_fattr(res.dir_attr);
+ nfs_free_fattr(res.fattr);
dprintk("NFS reply link: %d\n", status);
return status;
}
@@ -554,7 +574,7 @@ out:
static int
nfs3_proc_rmdir(struct inode *dir, struct qstr *name)
{
- struct nfs_fattr dir_attr;
+ struct nfs_fattr *dir_attr;
struct nfs3_diropargs arg = {
.fh = NFS_FH(dir),
.name = name->name,
@@ -563,14 +583,19 @@ nfs3_proc_rmdir(struct inode *dir, struct qstr *name)
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_RMDIR],
.rpc_argp = &arg,
- .rpc_resp = &dir_attr,
};
- int status;
+ int status = -ENOMEM;
dprintk("NFS call rmdir %s\n", name->name);
- nfs_fattr_init(&dir_attr);
+ dir_attr = nfs_alloc_fattr();
+ if (dir_attr == NULL)
+ goto out;
+
+ msg.rpc_resp = dir_attr;
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
- nfs_post_op_update_inode(dir, &dir_attr);
+ nfs_post_op_update_inode(dir, dir_attr);
+ nfs_free_fattr(dir_attr);
+out:
dprintk("NFS reply rmdir: %d\n", status);
return status;
}
@@ -589,7 +614,6 @@ nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
u64 cookie, struct page *page, unsigned int count, int plus)
{
struct inode *dir = dentry->d_inode;
- struct nfs_fattr dir_attr;
__be32 *verf = NFS_COOKIEVERF(dir);
struct nfs3_readdirargs arg = {
.fh = NFS_FH(dir),
@@ -600,7 +624,6 @@ nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
.pages = &page
};
struct nfs3_readdirres res = {
- .dir_attr = &dir_attr,
.verf = verf,
.plus = plus
};
@@ -610,7 +633,7 @@ nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
.rpc_resp = &res,
.rpc_cred = cred
};
- int status;
+ int status = -ENOMEM;
if (plus)
msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS];
@@ -618,12 +641,17 @@ nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
dprintk("NFS call readdir%s %d\n",
plus? "plus" : "", (unsigned int) cookie);
- nfs_fattr_init(&dir_attr);
+ res.dir_attr = nfs_alloc_fattr();
+ if (res.dir_attr == NULL)
+ goto out;
+
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_invalidate_atime(dir);
+ nfs_refresh_inode(dir, res.dir_attr);
- nfs_refresh_inode(dir, &dir_attr);
+ nfs_free_fattr(res.dir_attr);
+out:
dprintk("NFS reply readdir: %d\n", status);
return status;
}
diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c
index 56a86f6ac8b..75dcfc7da36 100644
--- a/fs/nfs/nfs3xdr.c
+++ b/fs/nfs/nfs3xdr.c
@@ -762,7 +762,7 @@ nfs3_xdr_wccstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
static int
nfs3_xdr_removeres(struct rpc_rqst *req, __be32 *p, struct nfs_removeres *res)
{
- return nfs3_xdr_wccstat(req, p, &res->dir_attr);
+ return nfs3_xdr_wccstat(req, p, res->dir_attr);
}
/*
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index a187200a7aa..c538c6106e1 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -206,14 +206,14 @@ extern ssize_t nfs4_listxattr(struct dentry *, char *, size_t);
/* nfs4proc.c */
-extern int nfs4_proc_setclientid(struct nfs_client *, u32, unsigned short, struct rpc_cred *);
-extern int nfs4_proc_setclientid_confirm(struct nfs_client *, struct rpc_cred *);
+extern int nfs4_proc_setclientid(struct nfs_client *, u32, unsigned short, struct rpc_cred *, struct nfs4_setclientid_res *);
+extern int nfs4_proc_setclientid_confirm(struct nfs_client *, struct nfs4_setclientid_res *arg, struct rpc_cred *);
extern int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred);
extern int nfs4_proc_async_renew(struct nfs_client *, struct rpc_cred *);
extern int nfs4_proc_renew(struct nfs_client *, struct rpc_cred *);
extern int nfs4_init_clientid(struct nfs_client *, struct rpc_cred *);
extern int nfs41_init_clientid(struct nfs_client *, struct rpc_cred *);
-extern int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait);
+extern int nfs4_do_close(struct path *path, struct nfs4_state *state, gfp_t gfp_mask, int wait);
extern struct dentry *nfs4_atomic_open(struct inode *, struct dentry *, struct nameidata *);
extern int nfs4_open_revalidate(struct inode *, struct dentry *, int, struct nameidata *);
extern int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle);
@@ -286,7 +286,7 @@ extern void nfs4_put_lock_state(struct nfs4_lock_state *lsp);
extern int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl);
extern void nfs4_copy_stateid(nfs4_stateid *, struct nfs4_state *, fl_owner_t);
-extern struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter);
+extern struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter, gfp_t gfp_mask);
extern int nfs_wait_on_sequence(struct nfs_seqid *seqid, struct rpc_task *task);
extern void nfs_increment_open_seqid(int status, struct nfs_seqid *seqid);
extern void nfs_increment_lock_seqid(int status, struct nfs_seqid *seqid);
diff --git a/fs/nfs/nfs4namespace.c b/fs/nfs/nfs4namespace.c
index f071d12c613..3c2a1724fbd 100644
--- a/fs/nfs/nfs4namespace.c
+++ b/fs/nfs/nfs4namespace.c
@@ -115,6 +115,7 @@ static struct vfsmount *try_location(struct nfs_clone_mount *mountdata,
char *page, char *page2,
const struct nfs4_fs_location *location)
{
+ const size_t addr_bufsize = sizeof(struct sockaddr_storage);
struct vfsmount *mnt = ERR_PTR(-ENOENT);
char *mnt_path;
unsigned int maxbuflen;
@@ -126,9 +127,12 @@ static struct vfsmount *try_location(struct nfs_clone_mount *mountdata,
mountdata->mnt_path = mnt_path;
maxbuflen = mnt_path - 1 - page2;
+ mountdata->addr = kmalloc(addr_bufsize, GFP_KERNEL);
+ if (mountdata->addr == NULL)
+ return ERR_PTR(-ENOMEM);
+
for (s = 0; s < location->nservers; s++) {
const struct nfs4_string *buf = &location->servers[s];
- struct sockaddr_storage addr;
if (buf->len <= 0 || buf->len >= maxbuflen)
continue;
@@ -137,11 +141,10 @@ static struct vfsmount *try_location(struct nfs_clone_mount *mountdata,
continue;
mountdata->addrlen = nfs_parse_server_name(buf->data, buf->len,
- (struct sockaddr *)&addr, sizeof(addr));
+ mountdata->addr, addr_bufsize);
if (mountdata->addrlen == 0)
continue;
- mountdata->addr = (struct sockaddr *)&addr;
rpc_set_port(mountdata->addr, NFS_PORT);
memcpy(page2, buf->data, buf->len);
@@ -156,6 +159,7 @@ static struct vfsmount *try_location(struct nfs_clone_mount *mountdata,
if (!IS_ERR(mnt))
break;
}
+ kfree(mountdata->addr);
return mnt;
}
@@ -221,8 +225,8 @@ out:
/*
* nfs_do_refmount - handle crossing a referral on server
+ * @mnt_parent - mountpoint of referral
* @dentry - dentry of referral
- * @nd - nameidata info
*
*/
struct vfsmount *nfs_do_refmount(const struct vfsmount *mnt_parent, struct dentry *dentry)
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 638067007c6..70015dd60a9 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -70,6 +70,9 @@ static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinf
static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *);
static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr);
static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr);
+static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
+ struct nfs_fattr *fattr, struct iattr *sattr,
+ struct nfs4_state *state);
/* Prevent leaks of NFSv4 errors into userland */
static int nfs4_map_errors(int err)
@@ -714,17 +717,18 @@ static void nfs4_init_opendata_res(struct nfs4_opendata *p)
static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
struct nfs4_state_owner *sp, fmode_t fmode, int flags,
- const struct iattr *attrs)
+ const struct iattr *attrs,
+ gfp_t gfp_mask)
{
struct dentry *parent = dget_parent(path->dentry);
struct inode *dir = parent->d_inode;
struct nfs_server *server = NFS_SERVER(dir);
struct nfs4_opendata *p;
- p = kzalloc(sizeof(*p), GFP_KERNEL);
+ p = kzalloc(sizeof(*p), gfp_mask);
if (p == NULL)
goto err;
- p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid);
+ p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask);
if (p->o_arg.seqid == NULL)
goto err_free;
path_get(path);
@@ -1060,7 +1064,7 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
{
struct nfs4_opendata *opendata;
- opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL);
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL, GFP_NOFS);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
@@ -1648,7 +1652,7 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, in
if (path->dentry->d_inode != NULL)
nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr, GFP_KERNEL);
if (opendata == NULL)
goto err_put_state_owner;
@@ -1659,15 +1663,24 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, in
if (status != 0)
goto err_opendata_put;
- if (opendata->o_arg.open_flags & O_EXCL)
- nfs4_exclusive_attrset(opendata, sattr);
-
state = nfs4_opendata_to_nfs4_state(opendata);
status = PTR_ERR(state);
if (IS_ERR(state))
goto err_opendata_put;
if (server->caps & NFS_CAP_POSIX_LOCK)
set_bit(NFS_STATE_POSIX_LOCKS, &state->flags);
+
+ if (opendata->o_arg.open_flags & O_EXCL) {
+ nfs4_exclusive_attrset(opendata, sattr);
+
+ nfs_fattr_init(opendata->o_res.f_attr);
+ status = nfs4_do_setattr(state->inode, cred,
+ opendata->o_res.f_attr, sattr,
+ state);
+ if (status == 0)
+ nfs_setattr_update_inode(state->inode, sattr);
+ nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr);
+ }
nfs4_opendata_put(opendata);
nfs4_put_state_owner(sp);
*res = state;
@@ -1914,7 +1927,7 @@ static const struct rpc_call_ops nfs4_close_ops = {
*
* NOTE: Caller must be holding the sp->so_owner semaphore!
*/
-int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
+int nfs4_do_close(struct path *path, struct nfs4_state *state, gfp_t gfp_mask, int wait)
{
struct nfs_server *server = NFS_SERVER(state->inode);
struct nfs4_closedata *calldata;
@@ -1933,7 +1946,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
};
int status = -ENOMEM;
- calldata = kzalloc(sizeof(*calldata), GFP_KERNEL);
+ calldata = kzalloc(sizeof(*calldata), gfp_mask);
if (calldata == NULL)
goto out;
calldata->inode = state->inode;
@@ -1941,7 +1954,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->arg.fh = NFS_FH(state->inode);
calldata->arg.stateid = &state->open_stateid;
/* Serialization for the sequence id */
- calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
+ calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
calldata->arg.fmode = 0;
@@ -2404,14 +2417,12 @@ static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, struct nfs_fh
static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry)
{
struct nfs_server *server = NFS_SERVER(inode);
- struct nfs_fattr fattr;
struct nfs4_accessargs args = {
.fh = NFS_FH(inode),
.bitmask = server->attr_bitmask,
};
struct nfs4_accessres res = {
.server = server,
- .fattr = &fattr,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS],
@@ -2438,7 +2449,11 @@ static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry
if (mode & MAY_EXEC)
args.access |= NFS4_ACCESS_EXECUTE;
}
- nfs_fattr_init(&fattr);
+
+ res.fattr = nfs_alloc_fattr();
+ if (res.fattr == NULL)
+ return -ENOMEM;
+
status = nfs4_call_sync(server, &msg, &args, &res, 0);
if (!status) {
entry->mask = 0;
@@ -2448,8 +2463,9 @@ static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry
entry->mask |= MAY_WRITE;
if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE))
entry->mask |= MAY_EXEC;
- nfs_refresh_inode(inode, &fattr);
+ nfs_refresh_inode(inode, res.fattr);
}
+ nfs_free_fattr(res.fattr);
return status;
}
@@ -2562,13 +2578,6 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
}
d_add(dentry, igrab(state->inode));
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- if (flags & O_EXCL) {
- struct nfs_fattr fattr;
- status = nfs4_do_setattr(state->inode, cred, &fattr, sattr, state);
- if (status == 0)
- nfs_setattr_update_inode(state->inode, sattr);
- nfs_post_op_update_inode(state->inode, &fattr);
- }
if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
status = nfs4_intent_set_file(nd, &path, state, fmode);
else
@@ -2596,14 +2605,19 @@ static int _nfs4_proc_remove(struct inode *dir, struct qstr *name)
.rpc_argp = &args,
.rpc_resp = &res,
};
- int status;
+ int status = -ENOMEM;
+
+ res.dir_attr = nfs_alloc_fattr();
+ if (res.dir_attr == NULL)
+ goto out;
- nfs_fattr_init(&res.dir_attr);
status = nfs4_call_sync(server, &msg, &args, &res, 1);
if (status == 0) {
update_changeattr(dir, &res.cinfo);
- nfs_post_op_update_inode(dir, &res.dir_attr);
+ nfs_post_op_update_inode(dir, res.dir_attr);
}
+ nfs_free_fattr(res.dir_attr);
+out:
return status;
}
@@ -2638,7 +2652,7 @@ static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir)
if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN)
return 0;
update_changeattr(dir, &res->cinfo);
- nfs_post_op_update_inode(dir, &res->dir_attr);
+ nfs_post_op_update_inode(dir, res->dir_attr);
return 1;
}
@@ -2653,29 +2667,31 @@ static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name,
.new_name = new_name,
.bitmask = server->attr_bitmask,
};
- struct nfs_fattr old_fattr, new_fattr;
struct nfs4_rename_res res = {
.server = server,
- .old_fattr = &old_fattr,
- .new_fattr = &new_fattr,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME],
.rpc_argp = &arg,
.rpc_resp = &res,
};
- int status;
+ int status = -ENOMEM;
- nfs_fattr_init(res.old_fattr);
- nfs_fattr_init(res.new_fattr);
- status = nfs4_call_sync(server, &msg, &arg, &res, 1);
+ res.old_fattr = nfs_alloc_fattr();
+ res.new_fattr = nfs_alloc_fattr();
+ if (res.old_fattr == NULL || res.new_fattr == NULL)
+ goto out;
+ status = nfs4_call_sync(server, &msg, &arg, &res, 1);
if (!status) {
update_changeattr(old_dir, &res.old_cinfo);
nfs_post_op_update_inode(old_dir, res.old_fattr);
update_changeattr(new_dir, &res.new_cinfo);
nfs_post_op_update_inode(new_dir, res.new_fattr);
}
+out:
+ nfs_free_fattr(res.new_fattr);
+ nfs_free_fattr(res.old_fattr);
return status;
}
@@ -2702,28 +2718,30 @@ static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *
.name = name,
.bitmask = server->attr_bitmask,
};
- struct nfs_fattr fattr, dir_attr;
struct nfs4_link_res res = {
.server = server,
- .fattr = &fattr,
- .dir_attr = &dir_attr,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK],
.rpc_argp = &arg,
.rpc_resp = &res,
};
- int status;
+ int status = -ENOMEM;
+
+ res.fattr = nfs_alloc_fattr();
+ res.dir_attr = nfs_alloc_fattr();
+ if (res.fattr == NULL || res.dir_attr == NULL)
+ goto out;
- nfs_fattr_init(res.fattr);
- nfs_fattr_init(res.dir_attr);
status = nfs4_call_sync(server, &msg, &arg, &res, 1);
if (!status) {
update_changeattr(dir, &res.cinfo);
nfs_post_op_update_inode(dir, res.dir_attr);
nfs_post_op_update_inode(inode, res.fattr);
}
-
+out:
+ nfs_free_fattr(res.dir_attr);
+ nfs_free_fattr(res.fattr);
return status;
}
@@ -3146,23 +3164,31 @@ static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_messa
msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT];
}
+struct nfs4_renewdata {
+ struct nfs_client *client;
+ unsigned long timestamp;
+};
+
/*
* nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
* standalone procedure for queueing an asynchronous RENEW.
*/
-static void nfs4_renew_release(void *data)
+static void nfs4_renew_release(void *calldata)
{
- struct nfs_client *clp = data;
+ struct nfs4_renewdata *data = calldata;
+ struct nfs_client *clp = data->client;
if (atomic_read(&clp->cl_count) > 1)
nfs4_schedule_state_renewal(clp);
nfs_put_client(clp);
+ kfree(data);
}
-static void nfs4_renew_done(struct rpc_task *task, void *data)
+static void nfs4_renew_done(struct rpc_task *task, void *calldata)
{
- struct nfs_client *clp = data;
- unsigned long timestamp = task->tk_start;
+ struct nfs4_renewdata *data = calldata;
+ struct nfs_client *clp = data->client;
+ unsigned long timestamp = data->timestamp;
if (task->tk_status < 0) {
/* Unless we're shutting down, schedule state recovery! */
@@ -3188,11 +3214,17 @@ int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred)
.rpc_argp = clp,
.rpc_cred = cred,
};
+ struct nfs4_renewdata *data;
if (!atomic_inc_not_zero(&clp->cl_count))
return -EIO;
+ data = kmalloc(sizeof(*data), GFP_KERNEL);
+ if (data == NULL)
+ return -ENOMEM;
+ data->client = clp;
+ data->timestamp = jiffies;
return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT,
- &nfs4_renew_ops, clp);
+ &nfs4_renew_ops, data);
}
int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred)
@@ -3494,7 +3526,9 @@ nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server,
return _nfs4_async_handle_error(task, server, server->nfs_client, state);
}
-int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, unsigned short port, struct rpc_cred *cred)
+int nfs4_proc_setclientid(struct nfs_client *clp, u32 program,
+ unsigned short port, struct rpc_cred *cred,
+ struct nfs4_setclientid_res *res)
{
nfs4_verifier sc_verifier;
struct nfs4_setclientid setclientid = {
@@ -3504,7 +3538,7 @@ int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, unsigned short po
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID],
.rpc_argp = &setclientid,
- .rpc_resp = clp,
+ .rpc_resp = res,
.rpc_cred = cred,
};
__be32 *p;
@@ -3547,12 +3581,14 @@ int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, unsigned short po
return status;
}
-static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cred *cred)
+static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp,
+ struct nfs4_setclientid_res *arg,
+ struct rpc_cred *cred)
{
struct nfs_fsinfo fsinfo;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM],
- .rpc_argp = clp,
+ .rpc_argp = arg,
.rpc_resp = &fsinfo,
.rpc_cred = cred,
};
@@ -3570,12 +3606,14 @@ static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cre
return status;
}
-int nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cred *cred)
+int nfs4_proc_setclientid_confirm(struct nfs_client *clp,
+ struct nfs4_setclientid_res *arg,
+ struct rpc_cred *cred)
{
long timeout = 0;
int err;
do {
- err = _nfs4_proc_setclientid_confirm(clp, cred);
+ err = _nfs4_proc_setclientid_confirm(clp, arg, cred);
switch (err) {
case 0:
return err;
@@ -3667,7 +3705,7 @@ static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, co
};
int status = 0;
- data = kzalloc(sizeof(*data), GFP_KERNEL);
+ data = kzalloc(sizeof(*data), GFP_NOFS);
if (data == NULL)
return -ENOMEM;
data->args.fhandle = &data->fh;
@@ -3823,7 +3861,7 @@ static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl,
struct nfs4_unlockdata *p;
struct inode *inode = lsp->ls_state->inode;
- p = kzalloc(sizeof(*p), GFP_KERNEL);
+ p = kzalloc(sizeof(*p), GFP_NOFS);
if (p == NULL)
return NULL;
p->arg.fh = NFS_FH(inode);
@@ -3961,7 +3999,7 @@ static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *
if (test_bit(NFS_DELEGATED_STATE, &state->flags))
goto out;
lsp = request->fl_u.nfs4_fl.owner;
- seqid = nfs_alloc_seqid(&lsp->ls_seqid);
+ seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL);
status = -ENOMEM;
if (seqid == NULL)
goto out;
@@ -3989,22 +4027,23 @@ struct nfs4_lockdata {
};
static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl,
- struct nfs_open_context *ctx, struct nfs4_lock_state *lsp)
+ struct nfs_open_context *ctx, struct nfs4_lock_state *lsp,
+ gfp_t gfp_mask)
{
struct nfs4_lockdata *p;
struct inode *inode = lsp->ls_state->inode;
struct nfs_server *server = NFS_SERVER(inode);
- p = kzalloc(sizeof(*p), GFP_KERNEL);
+ p = kzalloc(sizeof(*p), gfp_mask);
if (p == NULL)
return NULL;
p->arg.fh = NFS_FH(inode);
p->arg.fl = &p->fl;
- p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid);
+ p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask);
if (p->arg.open_seqid == NULL)
goto out_free;
- p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid);
+ p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask);
if (p->arg.lock_seqid == NULL)
goto out_free_seqid;
p->arg.lock_stateid = &lsp->ls_stateid;
@@ -4158,7 +4197,8 @@ static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *f
dprintk("%s: begin!\n", __func__);
data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file),
- fl->fl_u.nfs4_fl.owner);
+ fl->fl_u.nfs4_fl.owner,
+ recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS);
if (data == NULL)
return -ENOMEM;
if (IS_SETLKW(cmd))
@@ -4647,7 +4687,7 @@ static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs,
if (max_reqs != tbl->max_slots) {
ret = -ENOMEM;
new = kmalloc(max_reqs * sizeof(struct nfs4_slot),
- GFP_KERNEL);
+ GFP_NOFS);
if (!new)
goto out;
ret = 0;
@@ -4712,7 +4752,7 @@ static int nfs4_init_slot_table(struct nfs4_slot_table *tbl,
dprintk("--> %s: max_reqs=%u\n", __func__, max_slots);
- slot = kcalloc(max_slots, sizeof(struct nfs4_slot), GFP_KERNEL);
+ slot = kcalloc(max_slots, sizeof(struct nfs4_slot), GFP_NOFS);
if (!slot)
goto out;
ret = 0;
@@ -4761,7 +4801,7 @@ struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp)
struct nfs4_session *session;
struct nfs4_slot_table *tbl;
- session = kzalloc(sizeof(struct nfs4_session), GFP_KERNEL);
+ session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS);
if (!session)
return NULL;
@@ -5105,8 +5145,8 @@ static int nfs41_proc_async_sequence(struct nfs_client *clp,
if (!atomic_inc_not_zero(&clp->cl_count))
return -EIO;
- args = kzalloc(sizeof(*args), GFP_KERNEL);
- res = kzalloc(sizeof(*res), GFP_KERNEL);
+ args = kzalloc(sizeof(*args), GFP_NOFS);
+ res = kzalloc(sizeof(*res), GFP_NOFS);
if (!args || !res) {
kfree(args);
kfree(res);
@@ -5207,7 +5247,7 @@ static int nfs41_proc_reclaim_complete(struct nfs_client *clp)
int status = -ENOMEM;
dprintk("--> %s\n", __func__);
- calldata = kzalloc(sizeof(*calldata), GFP_KERNEL);
+ calldata = kzalloc(sizeof(*calldata), GFP_NOFS);
if (calldata == NULL)
goto out;
calldata->clp = clp;
@@ -5218,9 +5258,12 @@ static int nfs41_proc_reclaim_complete(struct nfs_client *clp)
msg.rpc_resp = &calldata->res;
task_setup_data.callback_data = calldata;
task = rpc_run_task(&task_setup_data);
- if (IS_ERR(task))
+ if (IS_ERR(task)) {
status = PTR_ERR(task);
+ goto out;
+ }
rpc_put_task(task);
+ return 0;
out:
dprintk("<-- %s status=%d\n", __func__, status);
return status;
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 6c5ed51f105..34acf5926fd 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -62,6 +62,7 @@ static LIST_HEAD(nfs4_clientid_list);
int nfs4_init_clientid(struct nfs_client *clp, struct rpc_cred *cred)
{
+ struct nfs4_setclientid_res clid;
unsigned short port;
int status;
@@ -69,11 +70,15 @@ int nfs4_init_clientid(struct nfs_client *clp, struct rpc_cred *cred)
if (clp->cl_addr.ss_family == AF_INET6)
port = nfs_callback_tcpport6;
- status = nfs4_proc_setclientid(clp, NFS4_CALLBACK, port, cred);
- if (status == 0)
- status = nfs4_proc_setclientid_confirm(clp, cred);
- if (status == 0)
- nfs4_schedule_state_renewal(clp);
+ status = nfs4_proc_setclientid(clp, NFS4_CALLBACK, port, cred, &clid);
+ if (status != 0)
+ goto out;
+ status = nfs4_proc_setclientid_confirm(clp, &clid, cred);
+ if (status != 0)
+ goto out;
+ clp->cl_clientid = clid.clientid;
+ nfs4_schedule_state_renewal(clp);
+out:
return status;
}
@@ -361,7 +366,7 @@ nfs4_alloc_state_owner(void)
{
struct nfs4_state_owner *sp;
- sp = kzalloc(sizeof(*sp),GFP_KERNEL);
+ sp = kzalloc(sizeof(*sp),GFP_NOFS);
if (!sp)
return NULL;
spin_lock_init(&sp->so_lock);
@@ -435,7 +440,7 @@ nfs4_alloc_open_state(void)
{
struct nfs4_state *state;
- state = kzalloc(sizeof(*state), GFP_KERNEL);
+ state = kzalloc(sizeof(*state), GFP_NOFS);
if (!state)
return NULL;
atomic_set(&state->count, 1);
@@ -537,7 +542,8 @@ void nfs4_put_open_state(struct nfs4_state *state)
/*
* Close the current file.
*/
-static void __nfs4_close(struct path *path, struct nfs4_state *state, fmode_t fmode, int wait)
+static void __nfs4_close(struct path *path, struct nfs4_state *state,
+ fmode_t fmode, gfp_t gfp_mask, int wait)
{
struct nfs4_state_owner *owner = state->owner;
int call_close = 0;
@@ -578,17 +584,17 @@ static void __nfs4_close(struct path *path, struct nfs4_state *state, fmode_t fm
nfs4_put_open_state(state);
nfs4_put_state_owner(owner);
} else
- nfs4_do_close(path, state, wait);
+ nfs4_do_close(path, state, gfp_mask, wait);
}
void nfs4_close_state(struct path *path, struct nfs4_state *state, fmode_t fmode)
{
- __nfs4_close(path, state, fmode, 0);
+ __nfs4_close(path, state, fmode, GFP_NOFS, 0);
}
void nfs4_close_sync(struct path *path, struct nfs4_state *state, fmode_t fmode)
{
- __nfs4_close(path, state, fmode, 1);
+ __nfs4_close(path, state, fmode, GFP_KERNEL, 1);
}
/*
@@ -618,7 +624,7 @@ static struct nfs4_lock_state *nfs4_alloc_lock_state(struct nfs4_state *state, f
struct nfs4_lock_state *lsp;
struct nfs_client *clp = state->owner->so_client;
- lsp = kzalloc(sizeof(*lsp), GFP_KERNEL);
+ lsp = kzalloc(sizeof(*lsp), GFP_NOFS);
if (lsp == NULL)
return NULL;
rpc_init_wait_queue(&lsp->ls_sequence.wait, "lock_seqid_waitqueue");
@@ -754,11 +760,11 @@ void nfs4_copy_stateid(nfs4_stateid *dst, struct nfs4_state *state, fl_owner_t f
nfs4_put_lock_state(lsp);
}
-struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter)
+struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter, gfp_t gfp_mask)
{
struct nfs_seqid *new;
- new = kmalloc(sizeof(*new), GFP_KERNEL);
+ new = kmalloc(sizeof(*new), gfp_mask);
if (new != NULL) {
new->sequence = counter;
INIT_LIST_HEAD(&new->list);
@@ -1347,7 +1353,7 @@ static int nfs4_recall_slot(struct nfs_client *clp)
nfs4_begin_drain_session(clp);
new = kmalloc(fc_tbl->target_max_slots * sizeof(struct nfs4_slot),
- GFP_KERNEL);
+ GFP_NOFS);
if (!new)
return -ENOMEM;
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 38f3b582e7c..6bdef28efa3 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -1504,14 +1504,14 @@ static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclie
hdr->replen += decode_setclientid_maxsz;
}
-static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs_client *client_state, struct compound_hdr *hdr)
+static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
{
__be32 *p;
p = reserve_space(xdr, 12 + NFS4_VERIFIER_SIZE);
*p++ = cpu_to_be32(OP_SETCLIENTID_CONFIRM);
- p = xdr_encode_hyper(p, client_state->cl_clientid);
- xdr_encode_opaque_fixed(p, client_state->cl_confirm.data, NFS4_VERIFIER_SIZE);
+ p = xdr_encode_hyper(p, arg->clientid);
+ xdr_encode_opaque_fixed(p, arg->confirm.data, NFS4_VERIFIER_SIZE);
hdr->nops++;
hdr->replen += decode_setclientid_confirm_maxsz;
}
@@ -2324,7 +2324,7 @@ static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, __be32 *p, struct nfs4
/*
* a SETCLIENTID_CONFIRM request
*/
-static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
+static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid_res *arg)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
@@ -2334,7 +2334,7 @@ static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, __be32 *p, str
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, req, &hdr);
- encode_setclientid_confirm(&xdr, clp, &hdr);
+ encode_setclientid_confirm(&xdr, arg, &hdr);
encode_putrootfh(&xdr, &hdr);
encode_fsinfo(&xdr, lease_bitmap, &hdr);
encode_nops(&hdr);
@@ -4397,7 +4397,7 @@ out_overflow:
return -EIO;
}
-static int decode_setclientid(struct xdr_stream *xdr, struct nfs_client *clp)
+static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
{
__be32 *p;
uint32_t opnum;
@@ -4417,8 +4417,8 @@ static int decode_setclientid(struct xdr_stream *xdr, struct nfs_client *clp)
p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
if (unlikely(!p))
goto out_overflow;
- p = xdr_decode_hyper(p, &clp->cl_clientid);
- memcpy(clp->cl_confirm.data, p, NFS4_VERIFIER_SIZE);
+ p = xdr_decode_hyper(p, &res->clientid);
+ memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
} else if (nfserr == NFSERR_CLID_INUSE) {
uint32_t len;
@@ -4815,7 +4815,7 @@ static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, __be32 *p, struct nfs_rem
goto out;
if ((status = decode_remove(&xdr, &res->cinfo)) != 0)
goto out;
- decode_getfattr(&xdr, &res->dir_attr, res->server,
+ decode_getfattr(&xdr, res->dir_attr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
@@ -5498,7 +5498,7 @@ static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, __be32 *p, void *dummy)
* Decode SETCLIENTID response
*/
static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, __be32 *p,
- struct nfs_client *clp)
+ struct nfs4_setclientid_res *res)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
@@ -5507,7 +5507,7 @@ static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, __be32 *p,
xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
status = decode_compound_hdr(&xdr, &hdr);
if (!status)
- status = decode_setclientid(&xdr, clp);
+ status = decode_setclientid(&xdr, res);
return status;
}
diff --git a/fs/nfs/nfsroot.c b/fs/nfs/nfsroot.c
index 8c55b27c0de..6bd19d843af 100644
--- a/fs/nfs/nfsroot.c
+++ b/fs/nfs/nfsroot.c
@@ -488,7 +488,6 @@ static int __init root_nfs_ports(void)
*/
static int __init root_nfs_get_handle(void)
{
- struct nfs_fh fh;
struct sockaddr_in sin;
unsigned int auth_flav_len = 0;
struct nfs_mount_request request = {
@@ -499,21 +498,24 @@ static int __init root_nfs_get_handle(void)
NFS_MNT3_VERSION : NFS_MNT_VERSION,
.protocol = (nfs_data.flags & NFS_MOUNT_TCP) ?
XPRT_TRANSPORT_TCP : XPRT_TRANSPORT_UDP,
- .fh = &fh,
.auth_flav_len = &auth_flav_len,
};
- int status;
+ int status = -ENOMEM;
+ request.fh = nfs_alloc_fhandle();
+ if (!request.fh)
+ goto out;
set_sockaddr(&sin, servaddr, htons(mount_port));
status = nfs_mount(&request);
if (status < 0)
printk(KERN_ERR "Root-NFS: Server returned error %d "
"while mounting %s\n", status, nfs_export_path);
else {
- nfs_data.root.size = fh.size;
- memcpy(nfs_data.root.data, fh.data, fh.size);
+ nfs_data.root.size = request.fh->size;
+ memcpy(&nfs_data.root.data, request.fh->data, request.fh->size);
}
-
+ nfs_free_fhandle(request.fh);
+out:
return status;
}
diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c
index 29d9d36cd5f..a3654e57b58 100644
--- a/fs/nfs/pagelist.c
+++ b/fs/nfs/pagelist.c
@@ -60,16 +60,10 @@ nfs_create_request(struct nfs_open_context *ctx, struct inode *inode,
{
struct nfs_page *req;
- for (;;) {
- /* try to allocate the request struct */
- req = nfs_page_alloc();
- if (req != NULL)
- break;
-
- if (fatal_signal_pending(current))
- return ERR_PTR(-ERESTARTSYS);
- yield();
- }
+ /* try to allocate the request struct */
+ req = nfs_page_alloc();
+ if (req == NULL)
+ return ERR_PTR(-ENOMEM);
/* Initialize the request struct. Initially, we assume a
* long write-back delay. This will be adjusted in
diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c
index 0288be80444..611bec22f55 100644
--- a/fs/nfs/proc.c
+++ b/fs/nfs/proc.c
@@ -224,35 +224,60 @@ static int nfs_proc_readlink(struct inode *inode, struct page *page,
return status;
}
+struct nfs_createdata {
+ struct nfs_createargs arg;
+ struct nfs_diropok res;
+ struct nfs_fh fhandle;
+ struct nfs_fattr fattr;
+};
+
+static struct nfs_createdata *nfs_alloc_createdata(struct inode *dir,
+ struct dentry *dentry, struct iattr *sattr)
+{
+ struct nfs_createdata *data;
+
+ data = kmalloc(sizeof(*data), GFP_KERNEL);
+
+ if (data != NULL) {
+ data->arg.fh = NFS_FH(dir);
+ data->arg.name = dentry->d_name.name;
+ data->arg.len = dentry->d_name.len;
+ data->arg.sattr = sattr;
+ nfs_fattr_init(&data->fattr);
+ data->fhandle.size = 0;
+ data->res.fh = &data->fhandle;
+ data->res.fattr = &data->fattr;
+ }
+ return data;
+};
+
+static void nfs_free_createdata(const struct nfs_createdata *data)
+{
+ kfree(data);
+}
+
static int
nfs_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
int flags, struct nameidata *nd)
{
- struct nfs_fh fhandle;
- struct nfs_fattr fattr;
- struct nfs_createargs arg = {
- .fh = NFS_FH(dir),
- .name = dentry->d_name.name,
- .len = dentry->d_name.len,
- .sattr = sattr
- };
- struct nfs_diropok res = {
- .fh = &fhandle,
- .fattr = &fattr
- };
+ struct nfs_createdata *data;
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_CREATE],
- .rpc_argp = &arg,
- .rpc_resp = &res,
};
- int status;
+ int status = -ENOMEM;
- nfs_fattr_init(&fattr);
dprintk("NFS call create %s\n", dentry->d_name.name);
+ data = nfs_alloc_createdata(dir, dentry, sattr);
+ if (data == NULL)
+ goto out;
+ msg.rpc_argp = &data->arg;
+ msg.rpc_resp = &data->res;
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_mark_for_revalidate(dir);
if (status == 0)
- status = nfs_instantiate(dentry, &fhandle, &fattr);
+ status = nfs_instantiate(dentry, data->res.fh, data->res.fattr);
+ nfs_free_createdata(data);
+out:
dprintk("NFS reply create: %d\n", status);
return status;
}
@@ -264,24 +289,12 @@ static int
nfs_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
dev_t rdev)
{
- struct nfs_fh fhandle;
- struct nfs_fattr fattr;
- struct nfs_createargs arg = {
- .fh = NFS_FH(dir),
- .name = dentry->d_name.name,
- .len = dentry->d_name.len,
- .sattr = sattr
- };
- struct nfs_diropok res = {
- .fh = &fhandle,
- .fattr = &fattr
- };
+ struct nfs_createdata *data;
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_CREATE],
- .rpc_argp = &arg,
- .rpc_resp = &res,
};
- int status, mode;
+ umode_t mode;
+ int status = -ENOMEM;
dprintk("NFS call mknod %s\n", dentry->d_name.name);
@@ -294,17 +307,24 @@ nfs_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
sattr->ia_size = new_encode_dev(rdev);/* get out your barf bag */
}
- nfs_fattr_init(&fattr);
+ data = nfs_alloc_createdata(dir, dentry, sattr);
+ if (data == NULL)
+ goto out;
+ msg.rpc_argp = &data->arg;
+ msg.rpc_resp = &data->res;
+
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_mark_for_revalidate(dir);
if (status == -EINVAL && S_ISFIFO(mode)) {
sattr->ia_mode = mode;
- nfs_fattr_init(&fattr);
+ nfs_fattr_init(data->res.fattr);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
}
if (status == 0)
- status = nfs_instantiate(dentry, &fhandle, &fattr);
+ status = nfs_instantiate(dentry, data->res.fh, data->res.fattr);
+ nfs_free_createdata(data);
+out:
dprintk("NFS reply mknod: %d\n", status);
return status;
}
@@ -398,8 +418,8 @@ static int
nfs_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
unsigned int len, struct iattr *sattr)
{
- struct nfs_fh fhandle;
- struct nfs_fattr fattr;
+ struct nfs_fh *fh;
+ struct nfs_fattr *fattr;
struct nfs_symlinkargs arg = {
.fromfh = NFS_FH(dir),
.fromname = dentry->d_name.name,
@@ -412,12 +432,18 @@ nfs_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
.rpc_proc = &nfs_procedures[NFSPROC_SYMLINK],
.rpc_argp = &arg,
};
- int status;
+ int status = -ENAMETOOLONG;
+
+ dprintk("NFS call symlink %s\n", dentry->d_name.name);
if (len > NFS2_MAXPATHLEN)
- return -ENAMETOOLONG;
+ goto out;
- dprintk("NFS call symlink %s\n", dentry->d_name.name);
+ fh = nfs_alloc_fhandle();
+ fattr = nfs_alloc_fattr();
+ status = -ENOMEM;
+ if (fh == NULL || fattr == NULL)
+ goto out;
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_mark_for_revalidate(dir);
@@ -427,12 +453,12 @@ nfs_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
* filehandle size to zero indicates to nfs_instantiate that it
* should fill in the data with a LOOKUP call on the wire.
*/
- if (status == 0) {
- nfs_fattr_init(&fattr);
- fhandle.size = 0;
- status = nfs_instantiate(dentry, &fhandle, &fattr);
- }
+ if (status == 0)
+ status = nfs_instantiate(dentry, fh, fattr);
+ nfs_free_fattr(fattr);
+ nfs_free_fhandle(fh);
+out:
dprintk("NFS reply symlink: %d\n", status);
return status;
}
@@ -440,31 +466,25 @@ nfs_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
static int
nfs_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
{
- struct nfs_fh fhandle;
- struct nfs_fattr fattr;
- struct nfs_createargs arg = {
- .fh = NFS_FH(dir),
- .name = dentry->d_name.name,
- .len = dentry->d_name.len,
- .sattr = sattr
- };
- struct nfs_diropok res = {
- .fh = &fhandle,
- .fattr = &fattr
- };
+ struct nfs_createdata *data;
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_MKDIR],
- .rpc_argp = &arg,
- .rpc_resp = &res,
};
- int status;
+ int status = -ENOMEM;
dprintk("NFS call mkdir %s\n", dentry->d_name.name);
- nfs_fattr_init(&fattr);
+ data = nfs_alloc_createdata(dir, dentry, sattr);
+ if (data == NULL)
+ goto out;
+ msg.rpc_argp = &data->arg;
+ msg.rpc_resp = &data->res;
+
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_mark_for_revalidate(dir);
if (status == 0)
- status = nfs_instantiate(dentry, &fhandle, &fattr);
+ status = nfs_instantiate(dentry, data->res.fh, data->res.fattr);
+ nfs_free_createdata(data);
+out:
dprintk("NFS reply mkdir: %d\n", status);
return status;
}
diff --git a/fs/nfs/read.c b/fs/nfs/read.c
index db9b360ae19..6e2b06e6ca7 100644
--- a/fs/nfs/read.c
+++ b/fs/nfs/read.c
@@ -40,7 +40,7 @@ static mempool_t *nfs_rdata_mempool;
struct nfs_read_data *nfs_readdata_alloc(unsigned int pagecount)
{
- struct nfs_read_data *p = mempool_alloc(nfs_rdata_mempool, GFP_NOFS);
+ struct nfs_read_data *p = mempool_alloc(nfs_rdata_mempool, GFP_KERNEL);
if (p) {
memset(p, 0, sizeof(*p));
@@ -50,7 +50,7 @@ struct nfs_read_data *nfs_readdata_alloc(unsigned int pagecount)
if (pagecount <= ARRAY_SIZE(p->page_array))
p->pagevec = p->page_array;
else {
- p->pagevec = kcalloc(pagecount, sizeof(struct page *), GFP_NOFS);
+ p->pagevec = kcalloc(pagecount, sizeof(struct page *), GFP_KERNEL);
if (!p->pagevec) {
mempool_free(p, nfs_rdata_mempool);
p = NULL;
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index e01637240ee..2f8b1157daa 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -141,7 +141,6 @@ static const match_table_t nfs_mount_option_tokens = {
{ Opt_resvport, "resvport" },
{ Opt_noresvport, "noresvport" },
{ Opt_fscache, "fsc" },
- { Opt_fscache_uniq, "fsc=%s" },
{ Opt_nofscache, "nofsc" },
{ Opt_port, "port=%s" },
@@ -171,6 +170,7 @@ static const match_table_t nfs_mount_option_tokens = {
{ Opt_mountaddr, "mountaddr=%s" },
{ Opt_lookupcache, "lookupcache=%s" },
+ { Opt_fscache_uniq, "fsc=%s" },
{ Opt_err, NULL }
};
@@ -423,15 +423,19 @@ static int nfs_statfs(struct dentry *dentry, struct kstatfs *buf)
unsigned char blockbits;
unsigned long blockres;
struct nfs_fh *fh = NFS_FH(dentry->d_inode);
- struct nfs_fattr fattr;
- struct nfs_fsstat res = {
- .fattr = &fattr,
- };
- int error;
+ struct nfs_fsstat res;
+ int error = -ENOMEM;
+
+ res.fattr = nfs_alloc_fattr();
+ if (res.fattr == NULL)
+ goto out_err;
error = server->nfs_client->rpc_ops->statfs(server, fh, &res);
+
+ nfs_free_fattr(res.fattr);
if (error < 0)
goto out_err;
+
buf->f_type = NFS_SUPER_MAGIC;
/*
@@ -1046,14 +1050,6 @@ static int nfs_parse_mount_options(char *raw,
kfree(mnt->fscache_uniq);
mnt->fscache_uniq = NULL;
break;
- case Opt_fscache_uniq:
- string = match_strdup(args);
- if (!string)
- goto out_nomem;
- kfree(mnt->fscache_uniq);
- mnt->fscache_uniq = string;
- mnt->options |= NFS_OPTION_FSCACHE;
- break;
/*
* options that take numeric values
@@ -1384,6 +1380,14 @@ static int nfs_parse_mount_options(char *raw,
return 0;
};
break;
+ case Opt_fscache_uniq:
+ string = match_strdup(args);
+ if (string == NULL)
+ goto out_nomem;
+ kfree(mnt->fscache_uniq);
+ mnt->fscache_uniq = string;
+ mnt->options |= NFS_OPTION_FSCACHE;
+ break;
/*
* Special options
@@ -2172,7 +2176,7 @@ static int nfs_get_sb(struct file_system_type *fs_type,
int error = -ENOMEM;
data = nfs_alloc_parsed_mount_data(3);
- mntfh = kzalloc(sizeof(*mntfh), GFP_KERNEL);
+ mntfh = nfs_alloc_fhandle();
if (data == NULL || mntfh == NULL)
goto out_free_fh;
@@ -2187,6 +2191,7 @@ static int nfs_get_sb(struct file_system_type *fs_type,
if (data->version == 4) {
error = nfs4_try_mount(flags, dev_name, data, mnt);
kfree(data->client_address);
+ kfree(data->nfs_server.export_path);
goto out;
}
#endif /* CONFIG_NFS_V4 */
@@ -2246,7 +2251,7 @@ out:
kfree(data->fscache_uniq);
security_free_mnt_opts(&data->lsm_opts);
out_free_fh:
- kfree(mntfh);
+ nfs_free_fhandle(mntfh);
kfree(data);
return error;
@@ -2555,7 +2560,7 @@ static int nfs4_remote_get_sb(struct file_system_type *fs_type,
};
int error = -ENOMEM;
- mntfh = kzalloc(sizeof(*mntfh), GFP_KERNEL);
+ mntfh = nfs_alloc_fhandle();
if (data == NULL || mntfh == NULL)
goto out_free_fh;
@@ -2613,7 +2618,7 @@ static int nfs4_remote_get_sb(struct file_system_type *fs_type,
out:
security_free_mnt_opts(&data->lsm_opts);
out_free_fh:
- kfree(mntfh);
+ nfs_free_fhandle(mntfh);
return error;
out_free:
@@ -2657,7 +2662,7 @@ static void nfs_fix_devname(const struct path *path, struct vfsmount *mnt)
devname = nfs_path(path->mnt->mnt_devname,
path->mnt->mnt_root, path->dentry,
page, PAGE_SIZE);
- if (devname == NULL)
+ if (IS_ERR(devname))
goto out_freepage;
tmp = kstrdup(devname, GFP_KERNEL);
if (tmp == NULL)
@@ -2668,41 +2673,120 @@ out_freepage:
free_page((unsigned long)page);
}
+struct nfs_referral_count {
+ struct list_head list;
+ const struct task_struct *task;
+ unsigned int referral_count;
+};
+
+static LIST_HEAD(nfs_referral_count_list);
+static DEFINE_SPINLOCK(nfs_referral_count_list_lock);
+
+static struct nfs_referral_count *nfs_find_referral_count(void)
+{
+ struct nfs_referral_count *p;
+
+ list_for_each_entry(p, &nfs_referral_count_list, list) {
+ if (p->task == current)
+ return p;
+ }
+ return NULL;
+}
+
+#define NFS_MAX_NESTED_REFERRALS 2
+
+static int nfs_referral_loop_protect(void)
+{
+ struct nfs_referral_count *p, *new;
+ int ret = -ENOMEM;
+
+ new = kmalloc(sizeof(*new), GFP_KERNEL);
+ if (!new)
+ goto out;
+ new->task = current;
+ new->referral_count = 1;
+
+ ret = 0;
+ spin_lock(&nfs_referral_count_list_lock);
+ p = nfs_find_referral_count();
+ if (p != NULL) {
+ if (p->referral_count >= NFS_MAX_NESTED_REFERRALS)
+ ret = -ELOOP;
+ else
+ p->referral_count++;
+ } else {
+ list_add(&new->list, &nfs_referral_count_list);
+ new = NULL;
+ }
+ spin_unlock(&nfs_referral_count_list_lock);
+ kfree(new);
+out:
+ return ret;
+}
+
+static void nfs_referral_loop_unprotect(void)
+{
+ struct nfs_referral_count *p;
+
+ spin_lock(&nfs_referral_count_list_lock);
+ p = nfs_find_referral_count();
+ p->referral_count--;
+ if (p->referral_count == 0)
+ list_del(&p->list);
+ else
+ p = NULL;
+ spin_unlock(&nfs_referral_count_list_lock);
+ kfree(p);
+}
+
static int nfs_follow_remote_path(struct vfsmount *root_mnt,
const char *export_path, struct vfsmount *mnt_target)
{
+ struct nameidata *nd = NULL;
struct mnt_namespace *ns_private;
- struct nameidata nd;
struct super_block *s;
int ret;
+ nd = kmalloc(sizeof(*nd), GFP_KERNEL);
+ if (nd == NULL)
+ return -ENOMEM;
+
ns_private = create_mnt_ns(root_mnt);
ret = PTR_ERR(ns_private);
if (IS_ERR(ns_private))
goto out_mntput;
+ ret = nfs_referral_loop_protect();
+ if (ret != 0)
+ goto out_put_mnt_ns;
+
ret = vfs_path_lookup(root_mnt->mnt_root, root_mnt,
- export_path, LOOKUP_FOLLOW, &nd);
+ export_path, LOOKUP_FOLLOW, nd);
+ nfs_referral_loop_unprotect();
put_mnt_ns(ns_private);
if (ret != 0)
goto out_err;
- s = nd.path.mnt->mnt_sb;
+ s = nd->path.mnt->mnt_sb;
atomic_inc(&s->s_active);
mnt_target->mnt_sb = s;
- mnt_target->mnt_root = dget(nd.path.dentry);
+ mnt_target->mnt_root = dget(nd->path.dentry);
/* Correct the device pathname */
- nfs_fix_devname(&nd.path, mnt_target);
+ nfs_fix_devname(&nd->path, mnt_target);
- path_put(&nd.path);
+ path_put(&nd->path);
+ kfree(nd);
down_write(&s->s_umount);
return 0;
+out_put_mnt_ns:
+ put_mnt_ns(ns_private);
out_mntput:
mntput(root_mnt);
out_err:
+ kfree(nd);
return ret;
}
@@ -2873,17 +2957,21 @@ static int nfs4_remote_referral_get_sb(struct file_system_type *fs_type,
struct super_block *s;
struct nfs_server *server;
struct dentry *mntroot;
- struct nfs_fh mntfh;
+ struct nfs_fh *mntfh;
int (*compare_super)(struct super_block *, void *) = nfs_compare_super;
struct nfs_sb_mountdata sb_mntdata = {
.mntflags = flags,
};
- int error;
+ int error = -ENOMEM;
dprintk("--> nfs4_referral_get_sb()\n");
+ mntfh = nfs_alloc_fhandle();
+ if (mntfh == NULL)
+ goto out_err_nofh;
+
/* create a new volume representation */
- server = nfs4_create_referral_server(data, &mntfh);
+ server = nfs4_create_referral_server(data, mntfh);
if (IS_ERR(server)) {
error = PTR_ERR(server);
goto out_err_noserver;
@@ -2915,7 +3003,7 @@ static int nfs4_remote_referral_get_sb(struct file_system_type *fs_type,
nfs_fscache_get_super_cookie(s, NULL, data);
}
- mntroot = nfs4_get_root(s, &mntfh);
+ mntroot = nfs4_get_root(s, mntfh);
if (IS_ERR(mntroot)) {
error = PTR_ERR(mntroot);
goto error_splat_super;
@@ -2932,12 +3020,15 @@ static int nfs4_remote_referral_get_sb(struct file_system_type *fs_type,
security_sb_clone_mnt_opts(data->sb, s);
+ nfs_free_fhandle(mntfh);
dprintk("<-- nfs4_referral_get_sb() = 0\n");
return 0;
out_err_nosb:
nfs_free_server(server);
out_err_noserver:
+ nfs_free_fhandle(mntfh);
+out_err_nofh:
dprintk("<-- nfs4_referral_get_sb() = %d [error]\n", error);
return error;
@@ -2946,6 +3037,7 @@ error_splat_super:
bdi_unregister(&server->backing_dev_info);
error_splat_bdi:
deactivate_locked_super(s);
+ nfs_free_fhandle(mntfh);
dprintk("<-- nfs4_referral_get_sb() = %d [splat]\n", error);
return error;
}
diff --git a/fs/nfs/unlink.c b/fs/nfs/unlink.c
index 6da3d3ff6ed..a2242af6a17 100644
--- a/fs/nfs/unlink.c
+++ b/fs/nfs/unlink.c
@@ -23,6 +23,7 @@ struct nfs_unlinkdata {
struct nfs_removeres res;
struct inode *dir;
struct rpc_cred *cred;
+ struct nfs_fattr dir_attr;
};
/**
@@ -169,7 +170,7 @@ static int nfs_do_call_unlink(struct dentry *parent, struct inode *dir, struct n
}
nfs_sb_active(dir->i_sb);
data->args.fh = NFS_FH(dir);
- nfs_fattr_init(&data->res.dir_attr);
+ nfs_fattr_init(data->res.dir_attr);
NFS_PROTO(dir)->unlink_setup(&msg, dir);
@@ -259,6 +260,7 @@ nfs_async_unlink(struct inode *dir, struct dentry *dentry)
goto out_free;
}
data->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE;
+ data->res.dir_attr = &data->dir_attr;
status = -EBUSY;
spin_lock(&dentry->d_lock);
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index de38d63aa92..3aea3ca98ab 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -1201,6 +1201,25 @@ int nfs_writeback_done(struct rpc_task *task, struct nfs_write_data *data)
#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
+static int nfs_commit_set_lock(struct nfs_inode *nfsi, int may_wait)
+{
+ if (!test_and_set_bit(NFS_INO_COMMIT, &nfsi->flags))
+ return 1;
+ if (may_wait && !out_of_line_wait_on_bit_lock(&nfsi->flags,
+ NFS_INO_COMMIT, nfs_wait_bit_killable,
+ TASK_KILLABLE))
+ return 1;
+ return 0;
+}
+
+static void nfs_commit_clear_lock(struct nfs_inode *nfsi)
+{
+ clear_bit(NFS_INO_COMMIT, &nfsi->flags);
+ smp_mb__after_clear_bit();
+ wake_up_bit(&nfsi->flags, NFS_INO_COMMIT);
+}
+
+
static void nfs_commitdata_release(void *data)
{
struct nfs_write_data *wdata = data;
@@ -1262,8 +1281,6 @@ static int nfs_commit_rpcsetup(struct list_head *head,
task = rpc_run_task(&task_setup_data);
if (IS_ERR(task))
return PTR_ERR(task);
- if (how & FLUSH_SYNC)
- rpc_wait_for_completion_task(task);
rpc_put_task(task);
return 0;
}
@@ -1294,6 +1311,7 @@ nfs_commit_list(struct inode *inode, struct list_head *head, int how)
BDI_RECLAIMABLE);
nfs_clear_page_tag_locked(req);
}
+ nfs_commit_clear_lock(NFS_I(inode));
return -ENOMEM;
}
@@ -1349,6 +1367,7 @@ static void nfs_commit_release(void *calldata)
next:
nfs_clear_page_tag_locked(req);
}
+ nfs_commit_clear_lock(NFS_I(data->inode));
nfs_commitdata_release(calldata);
}
@@ -1363,8 +1382,11 @@ static const struct rpc_call_ops nfs_commit_ops = {
static int nfs_commit_inode(struct inode *inode, int how)
{
LIST_HEAD(head);
- int res;
+ int may_wait = how & FLUSH_SYNC;
+ int res = 0;
+ if (!nfs_commit_set_lock(NFS_I(inode), may_wait))
+ goto out;
spin_lock(&inode->i_lock);
res = nfs_scan_commit(inode, &head, 0, 0);
spin_unlock(&inode->i_lock);
@@ -1372,7 +1394,13 @@ static int nfs_commit_inode(struct inode *inode, int how)
int error = nfs_commit_list(inode, &head, how);
if (error < 0)
return error;
- }
+ if (may_wait)
+ wait_on_bit(&NFS_I(inode)->flags, NFS_INO_COMMIT,
+ nfs_wait_bit_killable,
+ TASK_KILLABLE);
+ } else
+ nfs_commit_clear_lock(NFS_I(inode));
+out:
return res;
}
@@ -1444,6 +1472,7 @@ int nfs_wb_page_cancel(struct inode *inode, struct page *page)
BUG_ON(!PageLocked(page));
for (;;) {
+ wait_on_page_writeback(page);
req = nfs_page_find_request(page);
if (req == NULL)
break;
@@ -1478,30 +1507,18 @@ int nfs_wb_page(struct inode *inode, struct page *page)
.range_start = range_start,
.range_end = range_end,
};
- struct nfs_page *req;
- int need_commit;
int ret;
while(PagePrivate(page)) {
+ wait_on_page_writeback(page);
if (clear_page_dirty_for_io(page)) {
ret = nfs_writepage_locked(page, &wbc);
if (ret < 0)
goto out_error;
}
- req = nfs_find_and_lock_request(page);
- if (!req)
- break;
- if (IS_ERR(req)) {
- ret = PTR_ERR(req);
+ ret = sync_inode(inode, &wbc);
+ if (ret < 0)
goto out_error;
- }
- need_commit = test_bit(PG_CLEAN, &req->wb_flags);
- nfs_clear_page_tag_locked(req);
- if (need_commit) {
- ret = nfs_commit_inode(inode, FLUSH_SYNC);
- if (ret < 0)
- goto out_error;
- }
}
return 0;
out_error:
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-11-23 23:32:39 +0000